RM6442

Supports sending all the subnets with the ports to reduce the calls from nova
to neutron.

Conflicts:
	quark/plugin_views.py
Merge pull request #132 from roaet/port_load_subnets

RM6442
Allows manual reset of deallocate_at for admins

Done through PUT to /ip_addresses with "reset_allocation_time": true in the
body.

A few modifications were done to base_tests to support the admin context.

RM6300