Comment 1 for bug 1639788

Reviewed: https://review.openstack.org/393776
Committed: https://git.openstack.org/cgit/openstack/fuel-devops/commit/?id=b5a5886c37d1aeda37e7de5553708fc76639bfe2
Submitter: Jenkins
Branch: master

commit b5a5886c37d1aeda37e7de5553708fc76639bfe2
Author: Dennis Dmitriev <email address hidden>
Date: Fri Nov 4 15:41:59 2016 +0200

    Reconnect to libvirt service if previous connection is lost

    re-trying a requiest doesn't help in cases when chached connection
    was closed.

    - do not cache the connection in a property
    - check conn.isAlive() each time when already existing connection
      is picked

    Closes-Bug:#1639788
    Change-Id: I23c65162e32c97a03fc2950c41d13b83f350fee2