Comment 13 for bug 1544959

Reviewed: https://review.openstack.org/509121
Committed: https://git.openstack.org/cgit/openstack/charm-neutron-api/commit/?id=6cc620ab270bc0d9f12a2ff3e3b439c7f4e10a90
Submitter: Jenkins
Branch: master

commit 6cc620ab270bc0d9f12a2ff3e3b439c7f4e10a90
Author: Liam Young <email address hidden>
Date: Tue Oct 3 09:38:21 2017 +0000

    Block endpoint reg if cluster partially formed

    When an existing cluster of the service is scaled out the new unit
    will join with keystone before it is fully clustered. In identity
    joined hook the charmhelpers function canonical_url is called which
    in turn uses another charmhelpers function, resolve_address.
    resolve_address will only return the vip if the vip is set in config
    AND the unit is clustered. This means that the units local address
    is returned and that is then registered with keystone.

    This change gates registering an endpoint if the cluster is
    partially formed.

    Change-Id: I233e0cccb8ccd732080fd239df6d1e7db174eba5
    Partial-Bug: #1544959