Set the default indentation to 0 in inifile puppet module

A default of nil was causing problems with values when
they were commented out and didn't have a uncommented version
https://bugzilla.redhat.com/show_bug.cgi?id=903719

Also moving the inifile submodule to the packstack github org

Change-Id: Iea490a521864ad5ad02b0103299113e821fb47c2
Merge "Set the default indentation to 0 in inifile puppet module"