Rate limit request on matching host (cadence-workflow#899)

Matching host protection to prevent against high number of requests causing host to go out of memory due to aggresive buffer allocation by rpc stack. Also created a retryable client for making calls to matching service which will backoff on transient service failures like ServerBusy and InternalServiceErrors.
avmi · Jun 27, 2018 · f11fff3 · f11fff3
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commit f11fff3
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Showing 16 changed files with 497 additions and 19 deletions.
diff --git a/.gen/go/matching/idl.go b/.gen/go/matching/idl.go
diff --git a/.gen/go/matching/matchingservice_canceloutstandingpoll.go b/.gen/go/matching/matchingservice_canceloutstandingpoll.go
diff --git a/.gen/go/matching/matchingservice_describetasklist.go b/.gen/go/matching/matchingservice_describetasklist.go
diff --git a/.gen/go/matching/matchingservice_pollforactivitytask.go b/.gen/go/matching/matchingservice_pollforactivitytask.go