pulled logic out in pkg/releasetesting

* This is a simple mvp which processes a test definition with the
hook annotation for test when you run `helm test [release]`
* helm client cmd, proto def, tiller logic

laying ground work for #690

This fixes indentation, documentation, and removes unused protobuf
files.

This adds support for dry run on install, as well as providing
enough info for an install to display (verbose) manifests. While
doing this, I ended up just storing the rendered manifests for
simplicity.

	1. remove preliminary hapi protocol buffer definitions
	2. modify hapi Makefile
	3. update hapi protobuf model in _proto/hapi/{chart,release,services}
	4. generate protobuf src to pkg/proto/hapi/{chart,release,services}