[devops] Add REBOOT_TIMEOUT variable to all Jenkins jobs which execute system tests

[Artem Panchenko]

Currently we have problem with bootstrapping slaves on CI which is described here:

https://bugs.launchpad.net/fuel/+bug/1356965

To fix that issue the following patches were committed:

https://review.openstack.org/#/c/114543/
https://review.openstack.org/#/c/114961/

But the issue continues to be reproduced because by default those fixes are disabled:

http://jenkins-product.srt.mirantis.net:8080/view/0_master_swarm/job/master_fuelmain.system_test.ubuntu.thread_2/157/testReport/junit/(root)/prepare_slaves_3/prepare_slaves_3/

To enable 'reboot on boot fail' feature on CI we need to export REBOOT_TIMEOUT variable before running tests, e.g.:

export REBOOT_TIMEOUT=5000 # wait 5 seconds and reboot if boot fails

Could you please add it to the all jobs which run system tests?

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/121049

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/121049
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=b344bb686f77b7eebe6adba9aa0e15e0e4405df5
Submitter: Jenkins
Branch: master

commit b344bb686f77b7eebe6adba9aa0e15e0e4405df5
Author: Aleksandra Fedorova <email address hidden>
Date: Fri Sep 12 14:42:16 2014 +0400

    Add default REBOOT_TIMEOUT to system tests

    Change-Id: I4db420c8e85955dac71dbf5216412ad24b96f405
    Related-bug: #1365345

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: stable/5.1
Review: https://review.openstack.org/121051

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/121051
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=495a74ca85ae0a7d75c2491756815202679f6a86
Submitter: Jenkins
Branch: stable/5.1

commit 495a74ca85ae0a7d75c2491756815202679f6a86
Author: Aleksandra Fedorova <email address hidden>
Date: Fri Sep 12 14:42:16 2014 +0400

    Add default REBOOT_TIMEOUT to system tests

    Change-Id: I4db420c8e85955dac71dbf5216412ad24b96f405
    Related-bug: #1365345
    (cherry picked from commit b344bb686f77b7eebe6adba9aa0e15e0e4405df5)