jenkins: add ansible timestamp callback plugin

In order to allow effective benchmarking of the time taken for tasks and plays (in order to focus gate optimisation efforts), please include the ansible timestamp callback plugin in the ansible deployments done by jenkins.

plugin: https://github.com/ginsys/ansible-plugins/blob/devel/callback_plugins/timestamp.py

No configuration necessary, just wget it and drop it into /usr/local/lib/python2.7/dist-packages/ansible/callback_plugins/ on the deployment server.

Output sample is as follows:

TASK: [rsyslog_config | Ensure ownership on /var/spool/rsyslog] ***************
Friday 28 November 2014  15:41:53 +0000 (0:00:00.187)       0:03:28.372 *******
ok: [355158-node3_rsyslog_container-e8b322e5]
ok: [355160-node4_rsyslog_container-de8c5bab]
ok: [355156-node2_rsyslog_container-5b0f9790]
ok: [355161-node5_rsyslog_container-ffd02b4d]
ok: [355132-node1_rsyslog_container-30ede95c]

TASK: [rsyslog_config | Start rsyslog] ****************************************
Friday 28 November 2014  15:41:53 +0000 (0:00:00.169)       0:03:28.541 *******
changed: [355158-node3_rsyslog_container-e8b322e5]
changed: [355160-node4_rsyslog_container-de8c5bab]
changed: [355156-node2_rsyslog_container-5b0f9790]
changed: [355132-node1_rsyslog_container-30ede95c]
changed: [355161-node5_rsyslog_container-ffd02b4d]

PLAY RECAP ********************************************************************
Friday 28 November 2014  15:41:53 +0000 (0:00:00.252)       0:03:28.794 *******

The time between () is the duration of the previous task. The time to the right of that is the overall duration of the play.

rcbops / ansible-lxc-rpc

jenkins: add ansible timestamp callback plugin #664