Adjust Jenkins triggers in PyPI templates

Adjust Jenkins triggers in PyPI templates

- In the PyPI merge template, add cron parameter to support daily
  build and push to a staging repo, like the maven merge template.
- In PyPI release templates, change name of gerrit and github trigger
  file patterns parameter. This avoids accidental overriding by jobs
  that limit their actions to subdirectories. The release file patterns
  are hardcoded in a shell script. Remove params from doc.
- In all PyPI templates, add disabled option and disable-job parameter
  to be consistent with other python templates.

Change-Id: Ib2934728efbb4d957ad622dc84f1ee2a8383a27c
Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>