Create a new version-properties.sh script that will be used on slave
hosts to determine version information from git. This is mostly a copy
of the maven-properties.sh script. The reason we are not simply renaming
is that this commit must be merged then all slave images updated before
we change our jenkins jobs to use the new script. Renaming doesn't allow
us to do that.
Change-Id: I37c0b7cc3ca034addf32897a5a8c6501dedf00b0
688bdd459e