for prod/stage get a git sha from config/version.json which the rpm build will provide

So, I was looking at the stage builds and the value in the config file was '0.14.0-1' which was effectively the same as what we already know from package.json. It's really the git sha of the rpm that is wanted. To make things more like other services, I'll change the rpm build script to have a config/version.json and this PR will pull in that value at load time.

Also bumps the version to 0.14.1 (but maybe we should just go to 0.15.0).