Comment 7 for bug 1449497

Reviewed: https://review.openstack.org/196032
Committed: https://git.openstack.org/cgit/openstack/murano/commit/?id=82458d8e52533af6e3ee62d055ee861907f8a6bd
Submitter: Jenkins
Branch: stable/juno

commit 82458d8e52533af6e3ee62d055ee861907f8a6bd
Author: Stan Lagun <email address hidden>
Date: Thu Apr 30 15:21:28 2015 +0300

    pselect exited on first exception

    Due to eventlet bug in GreenPool implementation when first
    spawned thread threw exception imap method exited immediately
    without waiting for other spawned threads to accomplish.

    Issue in eventlet github:
    https://github.com/eventlet/eventlet/issues/232

    This commits wraps executed functions so that no exception can be
    raised on imap boundary and then unwraps result after execution

     Closes-Bug: #1449497

    Change-Id: I0e99de8e0711071c4a009e37a58ec22761e90e6c
    (cherry picked from commit 6a027bf11e756c57ab76f81d55fc9c26eb555bb2)
    (cherry picked from commit fba9ed643de02a353d8f30918d373458cc09815e)