Somewhat revert I7087701c63906f2a9843a4479947eb4fe8c7fd4e

The tempest_default_ip doesn't need to be a new fact. This was already
in the iptables defaults, but commented out. Uncommented the default,
and changed the task to match the tempest_ip name.

Change-Id: Ic69057b25f9cd378b536c40ee71295f5ed223d87
BZ:1080369 - Workaround to patch provision_700.py

Bug: 1080369 prevents multinode installation.
This changeset workaround the issue by copying a patched version
of provision_700.py if the installed version of openstack-packstack
matches any of the regex in packstack_versions_to_patch list.

Change-Id: I2dc331637f1152cf401d103853c5dbd4a19f9fb7
Adds missing provision tag

Change-Id: I6b9c084e6d95f997d9aa0360cb09c17d7dec6de0