Format the cidr properly using netaddr.IPNetwork

If CIDR is specified as 10.0.00.0/24, a vm created
with this subnet is not working properly.

Change-Id: Id8a438abcd6cf7d69fb0db188bff6ebdd44dc8b4
Support multiple ips for a port

Eg:
neutron port-create private --fixed-ips type=dict list=true
ip_address=10.0.0.39 ip_address=10.0.0.32

Change-Id: I8880729572451ac29e725be4c58189bde1d3a5c7
Merge "Format the cidr properly using netaddr.IPNetwork" into R1.06
Merge remote-tracking branch 'upstream/R1.06' into R1.06