Sync java options in example protos

Merge from 0.13 and regen projects.

Conflicts:
	build.yaml
	src/ruby/lib/grpc/version.rb

Test fix php interop test composer install git clone problem 

Fix some C# copyrights

Fixing Ruby binary build (again).

Added missing codegen includes

Change the census metadata keys.

Drop Python interop tests' "make install-certs"

Fix Profilers for coreclr

Add six to requirements.txt.

grpc_set_ssl_roots_override_callback for Python.

Fix node artifact building on mac

Add grpc_version.py to PYTHON-MANIFEST.in

Some distribtest fixes

Fixing ruby versionning.

Fix copyrights