Send network name and uuid to subnet create

Added the network segment name and uuid parameters to the infomation sent to
Cisco N1kV during subnet creation to allow for proper association of the
subnet and network segment.

Conflicts:
        neutron/tests/unit/cisco/n1kv/test_n1kv_plugin.py

Change-Id: I375d49ec43f79360189ecf5de0583873b8039db9
Closes-Bug: 1332713
(cherry picked from commit 779ddd17c575b55612e59ae5a605a14689820b98)
Merge "Send network name and uuid to subnet create" into stable/icehouse