Add missing dependency to //tensorflow/compiler/tests:xla_test for ROCm
Could you point me to where //tensorflow/compiler/tests:matrix_solve_op_test_cpu and //tensorflow/compiler/tests:matrix_solve_op_test_cpu_mlir_bridge_test need/import tensorflow.python.platform.sysconfig?

From https://github.com/tensorflow/tensorflow/blob/master/tensorflow/compiler/tests/matrix_solve_op_test.py I don't see any imports of sysconfig
 > Could you point me to where //tensorflow/compiler/tests:matrix_solve_op_test_cpu and //tensorflow/compiler/tests:matrix_solve_op_test_cpu_mlir_bridge_test need/import tensorflow.python.platform.sysconfig?
> 
> From https://github.com/tensorflow/tensorflow/blob/master/tensorflow/compiler/tests/matrix_solve_op_test.py I don't see any imports of sysconfig

Sorry for the confusion. The context was that the recent upstream refactoring made the //tensorflow/compiler/tests:matrix_solve_op_test_cpu test in our ROCm fork fail (https://github.com/ROCmSoftwarePlatform/tensorflow-upstream) due to missing dependency. So I added the fix and would like to upstream. However, I didn't realize that the previous change  in this test to disable cublasLt for ROCm (made last year) was never upstreamed. Now I have just added that commit in this PR as well. Thanks for the context. Now that this is modifying XLA flags, I don't think that I am the right reviewer. @gbaned Could you find another reviewer for this PR? Hi @wenchenvincent Can you please take look on below internal errors. Thank you!

ERROR: Strict deps violations: //tensorflow/compiler/tests:matrix_solve_op_test_cpu
  In third_party/tensorflow/compiler/tests/matrix_solve_op_test.py, no direct deps found for imports:
    line 26: from tensorflow.python.platform import sysconfig: Module "tensorflow.python.platform" not provided by a direct dep


Use --define=PYDEPS=<OFF|WARN> to temporarily change how strict deps are enforced.


*** Please fix target dependencies. ***

build_cleaner //third_party/tensorflow/compiler/tests:matrix_solve_op_test_cpu
The following tests needs tensorflow.python.platform.sysconfig //tensorflow/compiler/tests:matrix_solve_op_test_cpu //tensorflow/compiler/tests:matrix_solve_op_test_cpu_mlir_bridge_test