* Set IterVar index to 0 for local thread bound IterVars.
* Lint fix
* Use rank instead of scope name to predicate. Add tests.
* Handle cases other than local/threadIdx.
* Turn warp to the old behavior.
* Modify test to cover global/blockIdx.
* Fix a typo.
* Update test_te_schedule_ops.py with more testing coverage in test_local_stage_predicate; remove test_schedule_schedule_ops.py which was added by mistake.
