Adding client-side request cancellation support and testing (#6383)

* Add L0_request_cancellation (#6252)

* Add L0_request_cancellation

* Remove unittest test

* Add cancellation to gRPC server error handling

* Fix up

* Use identity model

* Add tests for gRPC client-side cancellation (#6278)

* Add tests for gRPC client-side cancellation

* Fix CodeQL issues

* Formatting

* Update qa/L0_client_cancellation/client_cancellation_test.py

Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>

* Move to L0_request_cancellation

* Address review comments

* Removing request cancellation support from asyncio version

* Format

* Update copyright

* Remove tests

* Handle cancellation notification in gRPC server (#6298)

* Handle cancellation notification in gRPC server

* Fix the request ptr initialization

* Update src/grpc/infer_handler.h

Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>

* Address review comment

* Fix logs

* Fix request complete callback by removing reference to state

* Improve documentation

---------

Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>

---------

Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>

* Fixes on the gRPC frontend to handle AsyncNotifyWhenDone() API (#6345)

* Fix segmentation fault in gRPC frontend

* Finalize all states upon completion

* Fixes all state cleanups

* Handle completed states when cancellation notification is received

* Add more documentation steps

* Retrieve dormant states to minimize the memory footprint for long streams

* Update src/grpc/grpc_utils.h

Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>

* Use a boolean state instead of raw pointer

---------

Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>

* Add L0_grpc_state_cleanup test (#6353)

* Add L0_grpc_state_cleanup test

* Add model file in QA container

* Fix spelling

* Add remaining subtests

* Add failing subtests

* Format fixes

* Fix model repo

* Fix QA docker file

* Remove checks for the error message when shutting down server

* Fix spelling

* Address review comments

* Add schedulers request cancellation tests (#6309)

* Add schedulers request cancellation tests

* Merge gRPC client test

* Reduce testing time and covers cancelling other requests as a consequence of request cancellation

* Add streaming request cancellation test

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Co-authored-by: Iman Tabrizian <iman.tabrizian@gmail.com>
Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>
Co-authored-by: Jacky <18255193+kthui@users.noreply.github.com>

Dockerfile.QA

@@ -109,6 +109,8 @@ RUN mkdir -p qa/common && \
     cp -r docs/examples/model_repository/simple_sequence qa/L0_grpc/models && \
     cp -r docs/examples/model_repository/simple_string qa/L0_grpc/models && \
     cp -r docs/examples/model_repository/inception_graphdef qa/L0_grpc/models && \
+    mkdir qa/L0_grpc_state_cleanup/models && \
+    cp -r /workspace/src/test/models/repeat_int32 qa/L0_grpc_state_cleanup/models/ && \
     mkdir qa/L0_http/models && \
     cp -r docs/examples/model_repository/simple qa/L0_http/models && \
     cp -r docs/examples/model_repository/simple_dyna_sequence qa/L0_http/models && \
@@ -139,6 +141,7 @@ RUN mkdir -p qa/common && \
     cp bin/data_compressor_test qa/L0_data_compression/. && \
     cp bin/metrics_api_test qa/L0_metrics/. && \
     cp bin/response_cache_test qa/L0_response_cache/. && \
+    cp bin/request_cancellation_test qa/L0_request_cancellation/. && \
     cp bin/triton_json_test qa/L0_json/. && \
     cp bin/backend_output_detail_test qa/L0_backend_output_detail/. && \
     cp -r deploy/mlflow-triton-plugin qa/L0_mlflow/.
@@ -259,6 +262,10 @@ RUN cp -r qa/L0_decoupled/models qa/L0_decoupled/python_models/ && \
     cp /workspace/tritonbuild/python/examples/decoupled/square_config.pbtxt \
         qa/L0_decoupled/python_models/square_int32/.
 
+RUN mkdir -p qa/L0_grpc_state_cleanup/models/repeat_int32/1 && \
+    cp backends/repeat/libtriton_repeat.so \
+        qa/L0_grpc_state_cleanup/models/repeat_int32/1/.
+
 RUN mkdir -p qa/L0_repoagent_checksum/models/identity_int32/1 && \
     cp tritonbuild/identity/install/backends/identity/libtriton_identity.so \
         qa/L0_repoagent_checksum/models/identity_int32/1/.