[17.08][pike] "format" option for {neutron,nova} -> designate removed in Pike and replaced with formatv4 formatv6

https://docs.openstack.org/releasenotes/designate/pike.html#critical-issues

"The format cfg in nova and neutron notification both will remove in the Pike. Please set formatv4 and formatv6 in the [handler:nova_fixed] and [handler:neutron_floatingip] your designate config file. formatv4 = '%(octet0)s-%(octet1)s-%(octet2)s-%(octet3)s.%(zone)s' formatv4 = '%(hostname)s.%(project)s.%(zone)s' formatv4 = '%(hostname)s.%(zone)s' formatv6 = '%(hostname)s.%(project)s.%(zone)s' formatv6 = '%(hostname)s.%(zone)s'"

formatv4 and formatv6 were implemented in newton.

https://blueprints.launchpad.net/designate/+spec/different-format-for-ipv4-and-ipv6

The charm still uses the old options so this functionality will be broken with Pike.
https://github.com/openstack/charm-designate/blob/stable/17.08/src/config.yaml#L33-L40

Change scope: add newton+ sink templates for neutron and nova and two new config.yaml options