fix flakey race in ruby tests

Update credentials test after #9328

Pin Bazel version to 0.4.4 in Dockerfile

Fix sanity

Fix Windows warning in binding.gyp for Win10 console

Google Compute Metadata - use full DNS path

Split event notification out of ev_epoll_linux.c

From within containers (or possibly other scenarios), the metadata
hostname might not resolve on GCP. Setting this to the full path
guarantees it will resolve.

C# new .csproj projects

Avoid boxing of IntPtr in CompletionRegistry

Fix the max idle timer

Remove unnecessary C# dependency in Dockerfiles

Fix mac build

Alpine linux support

Cleanup of tsi ssl handshaker factories.

Updating roots from Mozilla.

Get tests to pass for c++

Ignore a couple of errors in the Node express benchmark