This modifies the RabbitMQ Armada charts to wait specifically
for the RabbitMQ StatefulSets to complete prior to proceeding.
This is more robust than the default Pod waiting, as Pod waiting
for SS's has a race condition such that all Pods are likely
Running and Ready prior to any action having been taken, during
and upgrade scenario.
This change leverages recent Armada resource-based wait functionality.
Change-Id: I3867ce6966047d6b877a9bfa872defc0eda9693a
09f7130383