Deadlock can happen if exception is thrown during deployment

[Stan Lagun]

Murano engine holds method locks to prevent concurrent execution of the same method of the same object. If method execution ends with exception raised this locked is not released. If another thread (method) is was to wait for that lock it will end forever

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/134078

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/134078
Committed: https://git.openstack.org/cgit/stackforge/murano/commit/?id=5cc02804902b78a83d2ee3a5698f4807a13ebde6
Submitter: Jenkins
Branch: master

commit 5cc02804902b78a83d2ee3a5698f4807a13ebde6
Author: Stan Lagun <email address hidden>
Date: Thu Nov 13 02:33:57 2014 +0300

    Fix method lock release upon exception

    Method lock was not released if method execution was ended
    with uncaught exception. As a result dead lock could occur.
    This commit moves lock release code into finally block

    Change-Id: Ie5794c55c9d5a30cd3255ac06e9af944eb732bb1
    Closes-Bug: #1392102

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/135608

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/135608
Committed: https://git.openstack.org/cgit/stackforge/murano/commit/?id=c6712f8cc815fd998371c9ac10f2bdb1e0e5432e
Submitter: Jenkins
Branch: stable/juno

commit c6712f8cc815fd998371c9ac10f2bdb1e0e5432e
Author: Stan Lagun <email address hidden>
Date: Thu Nov 13 02:33:57 2014 +0300

    Fix method lock release upon exception

    Method lock was not released if method execution was ended
    with uncaught exception. As a result dead lock could occur.
    This commit moves lock release code into finally block

    Change-Id: Ie5794c55c9d5a30cd3255ac06e9af944eb732bb1
    Closes-Bug: #1392102
    (cherry picked from commit 5cc02804902b78a83d2ee3a5698f4807a13ebde6)