async client: introduce `AsyncClientRequestTracker` to keep track of inflight requests and cancel them on destruction#10359

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mattklein123 merged 9 commits intoenvoyproxy:masterfrom

yskopets:feature/introduce-async-request-tracker

Mar 18, 2020

Commits on Mar 13, 2020

async client: introduce `AsyncClientRequestTracker` to keep track of inflight requests and cancel them on destruction
yskopets
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Commits on Mar 15, 2020

Kick CI
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Commits on Mar 16, 2020

code review: use regular methods instead of operator overloading
yskopets
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code review: use `absl::flat_hash_set` instead of `std::unordered_set`
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Commits on Mar 17, 2020

Commits on Mar 18, 2020