Expand pylint to grpc_health and grpc_reflection

Fix ruby artifact build on internal_ci linux

Clang Format

Add sanity to internal_ci

Enable uploading more test results to BQ

Bugfix for bm_trickle

s/inline/__inline/. Visual studio incompateblity.

master bumped to 1.5.x

MS Visual studio '13 and before don't understand inline
and throw Error C2054.
Reference: https://msdn.microsoft.com/en-us/library/bw1hbe6y.aspx

Master 1.3.x upmerge

Make jobset more eintr resilient

Get rid of flakey asserts in num_watchers test

C# add microbenchmarks project

Remove uneeded ref/unref

Fix sanity

clang-format and include guard fix

Improve contributing guidelines