Comment 3 for bug 1494997

Reviewed: https://review.openstack.org/251341
Committed: https://git.openstack.org/cgit/openstack/murano-apps/commit/?id=b0e8122664c0289034144010a10fe06108743ab7
Submitter: Jenkins
Branch: stable/kilo

commit b0e8122664c0289034144010a10fe06108743ab7
Author: Alexander Tivelkov <email address hidden>
Date: Sat Sep 12 05:22:21 2015 +0300

    Fixed an issue occasionally causing an empty config for etcd slave nodes

    The script which adds new nodes to etcd cluster now does up to 30 attempts
    and fails (returns a non-zero exit code) if none are successful.

    A minor performance optimization has been done as well, so no unneeded
    waits happen when the command is successful and no temporary files are used.

    Closes-Bug: #1494997
    Change-Id: Ic0552f388518c119925da902b64797bbf96f979f
    (cherry picked from commit d1e5e3f323967115bd126b1f196dfb281d2fba76)