azure: upgrade to newer hosted VM images

Azure is phasing out old images on March 23rd 2020, but we're currently
still using them. So let's upgrade images as following:

    - Ubuntu 16.04 -> ubuntu-18.04
    - macOS 10.13 -> macOS-10.15
    - Hosted Windows machines -> vs2017-win2016

Each of them is currently the latest version. As the new Microsoft
Windows machine has upgraded to MSVS2017, we need to also adjust our
CMake generators to "Visual Studio 15 2017". As this CMake generator
doesn't accept the target platform name anymore, we instead need to set
it up via either "-A Win32" or "-A x64".

[1]: https://devblogs.microsoft.com/devops/removing-older-images-in-azure-pipelines-hosted-pools/

azure-pipelines.yml

@@ -9,7 +9,7 @@ jobs:
 - job: linux_amd64_xenial_gcc_openssl
   displayName: 'Linux (amd64; Xenial; GCC; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: azure-pipelines/docker.yml
     parameters:
@@ -25,7 +25,7 @@ jobs:
 - job: linux_amd64_xenial_gcc_mbedtls
   displayName: 'Linux (amd64; Xenial; GCC; mbedTLS)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: azure-pipelines/docker.yml
     parameters:
@@ -41,7 +41,7 @@ jobs:
 - job: linux_amd64_xenial_clang_openssl
   displayName: 'Linux (amd64; Xenial; Clang; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: azure-pipelines/docker.yml
     parameters:
@@ -57,7 +57,7 @@ jobs:
 - job: linux_amd64_xenial_clang_mbedtls
   displayName: 'Linux (amd64; Xenial; Clang; mbedTLS)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: azure-pipelines/docker.yml
     parameters:
@@ -71,9 +71,9 @@ jobs:
        GITTEST_NEGOTIATE_PASSWORD=${{ variables.GITTEST_NEGOTIATE_PASSWORD }}
 
 - job: macos
-  displayName: 'macOS'
+  displayName: 'macOS (amd64; 10.15)'
   pool:
-    vmImage: 'macOS 10.13'
+    vmImage: 'macOS-10.15'
   steps:
   - bash: . '$(Build.SourcesDirectory)/azure-pipelines/setup-osx.sh'
     displayName: Setup
@@ -89,31 +89,34 @@ jobs:
 
 - job: windows_vs_amd64
   displayName: 'Windows (amd64; Visual Studio)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - template: azure-pipelines/bash.yml
     parameters:
       environmentVariables:
-        CMAKE_GENERATOR: Visual Studio 12 2013 Win64
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON
+        CMAKE_GENERATOR: Visual Studio 15 2017
+        CMAKE_OPTIONS: -A x64 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON
         SKIP_SSH_TESTS: true
         SKIP_NEGOTIATE_TESTS: true
 
 - job: windows_vs_x86
   displayName: 'Windows (x86; Visual Studio)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - template: azure-pipelines/bash.yml
     parameters:
       environmentVariables:
-        CMAKE_GENERATOR: Visual Studio 12 2013
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS
+        CMAKE_GENERATOR: Visual Studio 15 2017
+        CMAKE_OPTIONS: -A Win32 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS
         SKIP_SSH_TESTS: true
         SKIP_NEGOTIATE_TESTS: true
 
 - job: windows_mingw_amd64
   displayName: 'Windows (amd64; MinGW)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - bash: . '$(Build.SourcesDirectory)\azure-pipelines\setup-mingw.sh'
     displayName: Setup
@@ -131,7 +134,8 @@ jobs:
 
 - job: windows_mingw_x86
   displayName: 'Windows (x86; MinGW)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - bash: . '$(Build.SourcesDirectory)\azure-pipelines\setup-mingw.sh'
     displayName: Setup
@@ -151,7 +155,7 @@ jobs:
 - job: documentation
   displayName: 'Generate Documentation'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - script: |
       cd $(Build.SourcesDirectory)/azure-pipelines/docker

azure-pipelines/coverity.yml

@@ -5,7 +5,7 @@ jobs:
 - job: coverity
   displayName: 'Coverity'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - script: |
      cd $(Build.SourcesDirectory)/azure-pipelines/docker

azure-pipelines/nightly.yml

@@ -5,7 +5,7 @@ jobs:
 - job: linux_amd64_xenial_gcc_openssl
   displayName: 'Linux (amd64; Xenial; GCC; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -21,7 +21,7 @@ jobs:
 - job: linux_amd64_xenial_gcc_mbedtls
   displayName: 'Linux (amd64; Xenial; GCC; mbedTLS)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -37,7 +37,7 @@ jobs:
 - job: linux_amd64_xenial_clang_openssl
   displayName: 'Linux (amd64; Xenial; Clang; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -53,7 +53,7 @@ jobs:
 - job: linux_amd64_xenial_clang_mbedtls
   displayName: 'Linux (amd64; Xenial; Clang; mbedTLS)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -67,9 +67,9 @@ jobs:
        RUN_INVASIVE_TESTS=true
 
 - job: macos
-  displayName: 'macOS'
+  displayName: 'macOS (amd64; 10.15)'
   pool:
-    vmImage: 'macOS 10.13'
+    vmImage: 'macOS-10.15'
   steps:
   - bash: . '$(Build.SourcesDirectory)/azure-pipelines/setup-osx.sh'
     displayName: Setup
@@ -85,31 +85,34 @@ jobs:
 
 - job: windows_vs_amd64
   displayName: 'Windows (amd64; Visual Studio)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - template: bash.yml
     parameters:
       environmentVariables:
-        CMAKE_GENERATOR: Visual Studio 12 2013 Win64
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON
+        CMAKE_GENERATOR: Visual Studio 15 2017
+        CMAKE_OPTIONS: -A x64 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON
         RUN_INVASIVE_TESTS: true
         SKIP_SSH_TESTS: true
 
 - job: windows_vs_x86
   displayName: 'Windows (x86; Visual Studio)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - template: bash.yml
     parameters:
       environmentVariables:
-        CMAKE_GENERATOR: Visual Studio 12 2013
-        CMAKE_OPTIONS: -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS
+        CMAKE_GENERATOR: Visual Studio 15 2017
+        CMAKE_OPTIONS: -A Win32 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS
         RUN_INVASIVE_TESTS: true
         SKIP_SSH_TESTS: true
 
 - job: windows_mingw_amd64
   displayName: 'Windows (amd64; MinGW)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - bash: . '$(Build.SourcesDirectory)\azure-pipelines\setup-mingw.sh'
     displayName: Setup
@@ -127,7 +130,8 @@ jobs:
 
 - job: windows_mingw_x86
   displayName: 'Windows (x86; MinGW)'
-  pool: Hosted
+  pool:
+    vmImage: 'vs2017-win2016'
   steps:
   - bash: . '$(Build.SourcesDirectory)\azure-pipelines\setup-mingw.sh'
     displayName: Setup
@@ -147,7 +151,7 @@ jobs:
 - job: linux_x86_bionic_gcc_openssl
   displayName: 'Linux (x86; Bionic; GCC; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -164,7 +168,7 @@ jobs:
 - job: linux_x86_bionic_clang_openssl
   displayName: 'Linux (x86; Bionic; Clang; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -181,7 +185,7 @@ jobs:
 - job: linux_arm32_bionic_gcc_openssl
   displayName: 'Linux (arm32; Bionic; GCC; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters:
@@ -199,7 +203,7 @@ jobs:
 - job: linux_arm64_bionic_gcc_openssl
   displayName: 'Linux (arm64; Bionic; GCC; OpenSSL)'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: 'ubuntu-18.04'
   steps:
   - template: docker.yml
     parameters: