Oozie needs to run its war repackaging script at %post or else plugins would break

Oozie now ships with a script to repackage its war file. Besides modifying files in a non modifiable area, there may be some issues with other projects trying to put in some additional jars.

Oozie needs to call his script to repackage its war file at post steps, or else it will overwrite the war file during an upgrade and loose any additional component unless all of them update as well afterward.

This should apply to both debs and rpms.