Ensure rabbitmq is up before applying the password change

[Saravanan KR]

Instead of checking the stack_action[1], investigate how service_validations functionality in opentstacklib can be used to ensure that rabbitmq is up before applying the password change.

Also provide default values for hiera value get.

[1] https://github.com/openstack/puppet-tripleo/blob/stable/ocata/manifests/profile/base/rabbitmq.pp#L123

[Emilien Macchi (emilienm)]

There are no currently open reviews on this bug, changing the status back to the previous state and unassigning. If there are active reviews related to this bug, please include links in comments.

[Emilien Macchi (emilienm)]

This is an automated cleanup. This bug report has been closed because it
is older than 18 months and there is no open code change to fix this.
After this time it is unlikely that the circumstances which lead to
the observed issue can be reproduced.

If you can reproduce the bug, please:
* reopen the bug report (set to status "New")
* AND add the detailed steps to reproduce the issue (if applicable)
* AND leave a comment "CONFIRMED FOR: <RELEASE_NAME>"
  Only still supported release names are valid (FUTURE, PIKE, QUEENS, ROCKY, STEIN).
  Valid example: CONFIRMED FOR: FUTURE