setup a parameter for the plugin version

This commit parameterizes the version so that it can be
passed in from the command line.  We use it to auotmate
the versioning and deployment to the repo.jenkins-ci.org
repository.

Change-Id: Ie3911e7181ff7e7f40f29ba48b0c0613937ec489
add a gitreview file

Change-Id: Iceb91b964f5d4de510182207d7164548da747e88
Merge "setup a parameter for the plugin version"