The cloud-compute relation uses the private-address setting to
reflect the hostname/address to be used for vm migrations. This
can be the default management network or an alternate one. When
this charm populates ssh known_hosts entries for compute hosts
it needs to ensure hostname, address and fqdn for the mgmt network
is included so that Nova resize operations can work if they use
the hostname from the db (which will always be from the mgmt
network).
Change-Id: Ic9e4657453d8f53d1ecbee23475c7b11549ebc14
Closes-Bug: #1969971
05b081bf5f