Add CI/CD and packaging

The remaining tasks here are to:

1. create a 'Nightly' (scheduled) job that checks out devel and if there are changes run a 'full build' (with all plugins (Motr etc)) turned on and proxygen.

If it passes it would sync with master.

2. Create a 'deploy' job that bumps the product version, creates a git tag and adds an rpm and tar to the package repo with this version - all from master.