Antoine Tollenaere

A76: Improvements to the Ring Hash LB Policy

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Based on discussion in grpc/grpc#33356.

Build for windows and linux arm64

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I only really need the binary for linux/arm64, but figured some people may want the windows one and there's no harm at publishing it.

ringhash: allow setting request hash key explicitly

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Implement part 1 of A76: the ability to set the request hash key, to extract the hash from a header. This allows using ring hash without xDS. RELEASE NOTES: -...

ringhash: make endpoint hash key configurable, and set it from EDS

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Implement part 2 of A76: the ability to specify the location of endpoints on the ring, and a default implementation based on EDS metadata that matches Envoy behavior. RELEASE NOTES:...

ringhash: more e2e tests from c-core

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Follow up to https://github.com/grpc/grpc-go/pull/7271 to fix https://github.com/grpc/grpc-go/issues/6072. This adds a dozen more end to end tests. There are tests that I did not port, specifically: - [`TestRingHash_SwitchToLowerPriorityAndThenBack`](https://github.com/grpc/grpc/blob/master/test/cpp/end2end/xds/xds_ring_hash_end2end_test.cc#L940-L943) was also flaky...

ringhash: fix bug where ring hash can be stuck in transient failure despite having available endpoints

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See https://github.com/grpc/grpc-go/issues/7363 for a problem description. Added test cases reproduce the error without the fix, but not reliably, since the ring may be constructed in a way where we don't...

ring_hash stuck in TransientFailure despite having available endpoints

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### What version of gRPC are you using? This most likely affects all version since ring hash behavior to always attempt to connect to at least one endpoint was added...

Flaky Test/AuthorityRevive in google.golang.org/grpc/xds/internal/xdsclient/tests

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https://github.com/grpc/grpc-go/actions/runs/9711071699/job/26803095072?pr=7364 ``` --- FAIL: Test (14.05s) --- FAIL: Test/AuthorityRevive (0.00s) authority_test.go:76: Created new snapshot cache... tlogger.go:116: INFO server.go:685 [core] [Server #518]Server created (t=+259.644µs) authority_test.go:76: Registered Aggregated Discovery Service (ADS)... authority_test.go:76:...

Linter rule for using context.Background() without a timeout in tests

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### Use case(s) - what problem will this feature solve? We want timeouts in every test, so anytime an operation needs a context (even during test setup), we want to...

Implement authority overrides in the DNS resolver

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### Is your feature request related to a problem? Please describe. We have use cases where we would like to use the DNS resolver with a DNS server that is...