Need to create gate job for fuel-web

[Tatyanka]

Add gate job for python fuelweb that should be executed
for each review in openstack/python-fuelweb repo.

Next variables should be exported:
UPDATE_FUEL=true
UPDATE_FUEL_PATH=/path/to/source

Test depends on empty,
so it is better to run it with -k option.
test_group: review_fuel_web_deploy
Scenario:
 1. Revert snapshot "empty"
 2. Apply changes into nailgun
 3. Get release id
 4. Update networks
 5. Bootstrap 3 nodes
 6. Create cluster
 7. Add 1 controller nodes
 8. Add 1 compute node
 9. Add 1 cinder node
 10. Deploy environment
 11. Run OSTF

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: master
Change author: Dmitry Kaigarodsev <email address hidden>
Review: https://review.fuel-infra.org/16102

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/268278
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=8a7ff2f755724f0bec20b30b42d5a1348737cf89
Submitter: Jenkins
Branch: master

commit 8a7ff2f755724f0bec20b30b42d5a1348737cf89
Author: Tatyana Leontovich <email address hidden>
Date: Fri Jan 15 20:26:35 2016 +0200

    Try to get all units related to statistic in container

    Related-Bug: #1532129
    Change-Id: I86a126949b5a6f2af92c1970e7ce9dbb74980e38

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/16102
Submitter: Dmitry Kaigarodsev <email address hidden>
Branch: master

Commit: 1bf80acbfd5bc69e30cf168b017fc1e8789cdcbb
Author: Dmitry Kaigarodsev <email address hidden>
Date: Mon Feb 29 15:39:48 2016

Added gating job for 'fuel-web' package:

- master.fuel-web.ubuntu.review_fuel_web_deploy

Change-Id: Ifd8d2ac3ee280dfdfbe5950bed535dd88a3cc45d
Closes-Bug: #1532129