Make the following changes to builders and publishers in service
of being able to handle this job:
http://paste.openstack.org/show/18541/
* Allow builders to have attributes
* Add a generic shell script builder
* Make the 'project' job attribute optional
(no link to github will be made in that case)
* Combine all separate publishers into one publisher module
so that jobs may have more than one publisher
* Name the section that lists publishers "post_build_actions"
to be consistent with the web UI
* Allow publishers to have attributes
* Add an archive artifacts publisher
* Add a parameterized build trigger publisher
* Add a parameterized build_trigger builder
* Add wrappers
* Add a build timeout wrapper
* Add a timstamp wrapper
Also, make the following small improvements:
* The 'disabled' attribute of a job is optional, defaults to false.
* Add a script to verify XML output is the same before and after
a change to the job filler (test.sh)
Change-Id: Icf2228494e431f5bf0a5f051f63842f12f6f92f1
1ea656b6a4