Add separate_haproxy test to swarm

[Andrey Sledzinskiy]

Test with next test group needs to be added to SWARM - thread_separate_haproxy

Specific exports:
SEPARATE_SERVICE_HAPROXY_PLUGIN_PATH
SEPARATE_SERVICE_BALANCER_PLUGIN_PATH
MULTIPLE_NETWORKS=true

plugins building was added in bug - https://bugs.launchpad.net/fuel/+bug/1583501

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

Fix proposed to branch: master
Change author: Dmitry Kaigarodsev <email address hidden>
Review: https://review.fuel-infra.org/21595

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

Reviewed: https://review.fuel-infra.org/21595
Submitter: Lesya Novaselskaya <email address hidden>
Branch: master

Commit: 59f207056773e813b88092c8ef35750c9d9abbab
Author: Dmitry Kaigarodsev <email address hidden>
Date: Fri Jun 3 10:12:14 2016

Added 'thread_separate_haproxy' swarm thread

* added swarm thread for 9.0 branch
* added swarm thread for 10.0 branch

Change-Id: Ib3db2ccc9680f29409e1a24a8722046019a5f81e
Closes-Bug: #1586421

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

Fix proposed to branch: master
Change author: Dmitry Kaigarodsev <email address hidden>
Review: https://review.fuel-infra.org/21747

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

Reviewed: https://review.fuel-infra.org/21747
Submitter: Aleksandra Fedorova <email address hidden>
Branch: master

Commit: 691db2042d82d5ea2e0ac06461fa680964ea8a5f
Author: Dmitry Kaigarodsev <email address hidden>
Date: Tue Jun 7 10:19:49 2016

Enabling 'thread_separate_haproxy' in swarm

* Added new thread in '9.0.swarm.runner':
  - 9.0.system_test.ubuntu.plugins.thread_separate_haproxy

* Added new thread in '10.0.swarm.runner':
  - 10.0.system_test.ubuntu.plugins.thread_separate_haproxy

Change-Id: I3d08ead33ca8a3de21d7c7855f317b2832852ab1
Closes-Bug: #1586421