Add firewall support
Add firewall policy support
Wait for firewall deletion

Necessary to be sure that the firewall is
actually deleted when trying to delete the
associated policy
Add firewall rule support
Make "name" optional for FWaaS element

As long as it is optional in Openstack,
there's no reason to make it mandatory
in terraform.
Add rules in firewall policy
Merge pull request #1 from haklop/openstack-provider-fwaas

Openstack provider FWaaS support