Comment 19 for bug 1436414

Reviewed: https://review.openstack.org/168315
Committed: https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=ea5967a0e1fee5c0b29b4864be4fe27ef24471ae
Submitter: Jenkins
Branch: master

commit ea5967a0e1fee5c0b29b4864be4fe27ef24471ae
Author: Ilya Shakhat <email address hidden>
Date: Fri Mar 27 15:17:30 2015 +0300

    Fix the way q-agent-cleanup executes shell processes

    Shell commands are executed via subprocess.Popen(). Currently the
    status of process is tracked by wait() method which results in deadlocks
    when output is large enough (tens of kB). The correct way is to use
    communicate() method.

    Partial-bug 1436414

    Change-Id: Ibbbfa3a5331f865e48160c37e9ba558af19dc680