Supply missing cisco_cfg_agent.ini file

cisco_cfg_agent.ini file was missed in the initial commit and
caused neutron startup issues. This patch supplies the proper
ini file and adds it back to neutron setup.cfg.
Also the introduced config options are put in a specific group
instead of default as was in the initial commit.

Change-Id: I74b3b77fe6e196524809580f522f91f3b62f5ba7
Closes-bug: #1351466
Do not lookup l3-agent for floating IP if host=None, dvr issue

If a floating IP has been associated with a port, but the port
has not been associated with an instance, attempting to lookup
the l3-agent hosting it will cause an AgentNotFoundByTypeHost
exception.  Just skip it and go onto the next one.

Change-Id: If3df9770fa9e2d2eada932ee5f243d3458bf7261
Closes-Bug: #1370795
Merge "Supply missing cisco_cfg_agent.ini file"
Merge "Do not lookup l3-agent for floating IP if host=None, dvr issue"