Unified info messages, OpenStack names and Packstack names

Change-Id: I2f438b9057da50ec727ec9cc1fa702de4621e782
Adding Scientific Linux as an option firewall persist rules

https://bugzilla.redhat.com/show_bug.cgi?id=906269

Change-Id: I99951d2b4d350228dbea340e9e865e0c36f3424f
Remove pointless Debian support to simplify code

Packstack is incompatible to Debian in many places, therefore
supporting it in just one single place just makes no sense. If
at all, complete instead of very partial Debian support should
be introduced. Until such time it's easiest to support all the
different Fedora and RHEL derivatives by having no operating
system discriminator at all.

Partially discussed at:
https://bugzilla.redhat.com/show_bug.cgi?id=906269

Change-Id: I93cd4d25b0f85bae24c97be6ed91547dce1935d7
Merge "Adding Scientific Linux as an option firewall persist rules"
Merge "Remove pointless Debian support to simplify code"
Merge "Unified info messages, OpenStack names and Packstack names"