Made import key pair examples more specific.

Removed image specific ssh examples when using import key pair feature under access and security. Replaced with a single generic example.

Closes-bug: 1326291
Change-Id: I2e941e95d72cbef1da7e597f82b5d4b541efb72b
Add knobs for setting MAC learning on ports

If the Neutron MAC learning API extension is supported, allow user to enable it
for a port. Also display the current MAC learning state in the Ports table and
Port Detail page.

Change-Id: Ia4c4e9a4116527aae8b5488ff8a75eb4113bb8cf
Implements: blueprint mac-learning-knobs
Merge "Made import key pair examples more specific."
Merge "Add knobs for setting MAC learning on ports"