allow reapplication of successful manifest

[johnl]

it's difficult to re-run puppet without making a fake commit to ensure it changed.

we could probably keep the last successful extracted manifests/modules around and only delete them when it's replaced by the next successful run. You're at least then able to log in and re-run it a bit easier.

can't think of another way to do this though, via git itself.

[skx]

This post seems to address the topic:

• http://stackoverflow.com/questions/13677125/force-git-to-run-post-receive-hook-even-if-everything-is-up-to-date