This change adds infoblox-api relation which allows neutron-server
to publish events to a remote infoblox server. Additionally this
change enables IPAM for the neutron service, which forces neutron
to authorize any network changes against the target Infoblox
server.
This change adds the proper hooks, context, and templates to add
infobox configuration to /etc/neutron/neutron.conf, passed by the
infoblox subordinate charm.
Closes-Bug: 1776689
Change-Id: Ib11377bd61c2b3fed5104ba0a423073a15cc18a2