neutron.conf does not have the definition of firewall quotas

We have the definition of quotas for firewall/policy/role
in code, but we do not have them in neutron.conf.

Change-Id: I23ae4f5c00ccc62dd9f97c77011da4ce0bbf983e
Closes-Bug: #1349318
Merge "neutron.conf does not have the definition of firewall quotas"