Fix backslash line endings for grpc_python/Dockerfile.

Without the correct line endings docker had errors interpreting '&&' as a command.

Remove some debugging logs from the unary poll promote path

Update pubsub example channel creation and credentials. This is a duplicate of #817.

Propagate grpc_google_default_credentials_create errors

Adding a Travis badge.

Revert "dockerfiles/go: go install from GOPATH and remove bash from CMD"

Improved Makefile protoc message

Hookup TSI tracer

Deflake fling_test

Added python tests to .travis.yml

I put these in while debugging correctness, and forgot to remove them.

Update Python codegen to early_adopter interface

Removed execute permissions from README files.

Docker files for c# (on mono)

Remove HTTP mappings from status.h

Also, make the flaky: tag a little more visible in build.json

Make debugging a little easier, and remove an unnecessary assert

dockerfiles/go: go install from GOPATH and remove bash from CMD