bug in ansible regarding delay/retry, removing variable

* https://github.com/ansible/ansible/issues/5031 the delay/retry
variable is not cast correctly.

Change-Id: Iaf8cdb0224537e8c77f9860195499d399583c18b
rhel7.0 workaround to update and ignore errors

* This is required because the package base for rhel
is a little unstable.

* bz 850020 is also preventing a proper update

Change-Id: I06ef7688d587fa709c3a22adf0d1618e129a6e99
Fix nova compute workaround

The nova compute workaround for foreman would erroneously add the
necessary lines on subsequent runs. This fix makes it only put the lines
in if they don't exist.

Change-Id: I6f5a46ae1910c075fe038fcf330b10dd2bca3447
Fix seed values for foreman

The old value for swift_ring_server was wrong.
Add swift_local_interface to seeds.

Change-Id: Ie7e478faaa949e96c76c7f5ccf59eb9eac92a79f