Fix identification of address Cassandra is configured to listen to

Some scripts fails to connect to Cassandra if it is configured
to listen to address other then that ``hostname`` command returns.
Scripts do their job with default reclass models, but fail if model
has been customized to run Cassandra on network other then control

Closes-bug: PROD-16635

Change-Id: I6b6002b4877f78c8998214bad0c736aeb9edfbd4
4 files changed