Also updates the version of grpcio_test. Now that grpcio and its tests
are in different project packages, the version numbers should be kept in
sync.

This is in preparation of moving all tests into a separate package to
enable ease of coverage checking and testing.

Conflicts:
	src/python/src/setup.py

Also adds the commands to the grpc_docker shell library script to
support running in docker.

The server_host_override flag's implementation remaining
outstanding means that this only works over insecure
connections for now.

The source code is moved from src/python to
src/python/src. A setup.py is added at
src/python. The build_python.sh and
run_python.sh scripts are updated to build
and run the Python tests by building a
package and installing it in the developer's
Python 2.7 virtual environment.

It's rather unimpressive at the moment with just
one module.

- Adds a dependency to protobuf-ruby in the gemfile
- Updates math.proto to proto3
- Updates math server and client to use protoc protos
- Updates interop server and client to use protoc protos

Also
- Fixes/Updates the noproto samples

TESTED: math_server and math_client can communicate locally.
	Change on 2015/01/07 by temiola <temiola@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83483448

	Change on 2014/12/01 by nnoble <nnoble@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=81111468