Check firewall on various cluster configurations

For different environment configurations (simple/HA,
NovaNetwork/Neutron) different puppet manifests and
deployment scenarios can be used, so firewall config
can also be varied. Firewall configuration could be
distorted after HA failover, node addition or cluster
restart. That's why it is necessary to perform
firewall check in few system tests.

Change-Id: I8d87a422399c423482886443bd3a32ff97befad5
Closes-bug: #1393461
Merge "Check firewall on various cluster configurations" into stable/5.1