Yash Tibrewal 108ee944df [CSM] Fix CSM Observability for trailers-only response (#36413) ... Before this change, on a trailers-only response, Metadata Exchange needed by CSM would just be dropped, and hence CSM labels would not be seen. Changes - * OTel call attempt tracer populates labels from trailers if it's a trailers-only response. * HTTP2 layer propagates the Metadata Exchange field from headers to trailers for trailers-only responses. * Add a test to make sure that retries continue to work when Metadata Exchange is enabled and a trailers-only response is sent. (This verifies that a trailers-only response remains a trailers-only response.) Closes #36413 COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36413 from yashykt:MetadataExchangeInTrailers e7d202685e PiperOrigin-RevId: 630144618		2024-05-02 12:32:56 -07:00
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csm	[CSM] Fix CSM Observability for trailers-only response (#36413)	2024-05-02 12:32:56 -07:00
filters	[reorg] move test/core/util -> test/core/test_util (#36446)	2024-04-29 17:06:40 -07:00
gcp	[reorg] move test/core/util -> test/core/test_util (#36446)	2024-04-29 17:06:40 -07:00
otel	[CSM] Fix CSM Observability for trailers-only response (#36413)	2024-05-02 12:32:56 -07:00
BUILD	[reorg] move test/core/util -> test/core/test_util (#36446)	2024-04-29 17:06:40 -07:00
chaotic_good_test.cc	[reorg] move test/core/util -> test/core/test_util (#36446)	2024-04-29 17:06:40 -07:00