NSX v3 does not support CIDR notated IP addresses for
port IP address bindings; thus something like
9.10.11.12/24 is an invalid IP address to use for an address
pair. This patch adds a check to ensure IP address are
of the proper format.
Additionally this patch adds logic to the port update
flow in the case where a backend error occurs on port
update. The logic contained herein now reverts the
address pairs to ensure they are in sync with neutron.
Unit tests are also included.
Change-Id: Ia0c9187b1f6e304690e1a56e94c47fe069179645
Closes-Bug: #1531558
a59c9c4d0e