[experimental] Decrease number of report to Nailgun in case of task deployment

[Vladimir Sharshov]

Astute now send too many reports to Nailgun instead of sending only updates and ignore other.

It is affects two things:

- astute log increase to fast;
- nailgun overloaded by useless activity.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/257575

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/257575
Committed: https://git.openstack.org/cgit/openstack/fuel-astute/commit/?id=56dd2ba89152b1496daeeaa22234a9fa706a4c78
Submitter: Jenkins
Branch: master

commit 56dd2ba89152b1496daeeaa22234a9fa706a4c78
Author: Vladimir Sharshov (warpc) <email address hidden>
Date: Tue Dec 15 00:53:46 2015 +0300

    Protect from sending duplicate statuses for task deployment

    Serveral changes:

    * protect from sending duplicate statuses;
    * validate sending statuses.

    Also:

    * fix stop deployment in case of task deployment;
    * remove autoload for important modules to support multithreading;
    * add info about provision and deployment time consuming;
    * add info about task time consuming;
    * add tests.

    Change-Id: Idd3556cdd55c1718ed02b36985d1d82974bc927e
    Closes-Bug: #1526059