Fixes to Dockerhub release tagging (envoyproxy#1777)

Signed-off-by: bndw <[email protected]>

optional: make coverity happy (envoyproxy#1767)

Signed-off-by: Matt Klein <[email protected]>

Using common member variables in integration tests (envoyproxy#1532)

docs: 1.3.0 release notes (envoyproxy#926)

Envoy Rate Limit: Enable stage setting matching. (envoyproxy#532)

docs: 1.1.0 release notes (istio#259)

docs: final updates for 1.0.0 (istio#59)