Comment 4 for bug 1569537

Reviewed: https://review.openstack.org/305708
Committed: https://git.openstack.org/cgit/openstack/fuel-virtualbox/commit/?id=afd03be44cb5104f17613cf14a74d7a611d0ec87
Submitter: Jenkins
Branch: stable/mitaka

commit afd03be44cb5104f17613cf14a74d7a611d0ec87
Author: Maksim Malchuk <email address hidden>
Date: Tue Apr 12 22:22:25 2016 +0300

    Ignore SSH errors

    This commit adds the new parameter to the wait_for_exec_in_bootstrap
    function for always return success when this parameter non-empty.
    This functionality will be used in the last step of the installation
    when we need to wait when Fuel master node installation ends.

    Change-Id: I399000821a4a9aeed4d359da8d0e723ea1642c88
    Closes-Bug: #1569537
    Signed-off-by: Maksim Malchuk <email address hidden>
    (cherry picked from commit 7dd1a24416cc6072156b1bcbcb41c27916f7a508)