add ps3joy diagnostics to pr2_analyzers in pr2_bringup (ros ticket #5130)

[ahendrix]

there is an example diagnostics.yaml in ps3joy. It now publishes battery status of the controller

trac data:

• Owner: mwise
• Reporter: mwise
• Reported at: Thu Jun 23 16:13:00 2011
• URL: https://code.ros.org/trac/wg-ros-pkg/ticket/5130

[ahendrix]

[wim] I'll assign this back to you, as you were going to commit a patch into pr2_robot. Note that the pr2_robot stack has moved to kforge https://kforge.ros.org/pr2robot/hg.