Need the netmask for SelfIPs to be full netmask or cidr notation

[jgruber]

With Mitaka+ Heat you can get the subnets associated with a Port object. From the subnet you can get a CIDR notation. That's the last piece missing to support full static configurations (no DHCP needed) for VE onboarding.

However, the startup script needs to take CIDR notation for Self IP creations.

f5-openstack-image-prep/lib/f5_image_prep/os-functions/openstack-network.sh

line 58 needs to have the IP regex removed from the netmask validation for this to work.

[jgruber]

The startup script should be altered to allow three syntax:

1. xxx.xxx.xxx.xxx - IP format
2. xx - 2 digit mask bits
3. xxx.xxx.xxx.xxx/xx - CIDR as this is what is provided by Neutron subnet