Merge from master to firebase#84

Merged

sarvaniv merged 12 commits intocloudendpoints:firebasefrom

sarvaniv:HEAD

Feb 3, 2017

Commits on Jan 11, 2017

Commits on Jan 12, 2017

Align with latest istio/proxy. (#73)
chowchow316
authored

Commits on Jan 14, 2017

Support HEAD request in transcoding (#74)
lizan
authored

Commits on Jan 23, 2017

Fixing bazel install for ubuntu salve
sebastienvas
committed

Commits on Jan 24, 2017

Use open-sourced scripts (#76)
kyessenov
authored

Commits on Jan 27, 2017

Update to istio/proxy with mixer_client integration. (#78)
qiwzhang
authored

Commits on Jan 31, 2017

Align with istio/proxy. (#79)
chowchow316
authored

Commits on Feb 2, 2017

Commits on Feb 3, 2017