Merge remote-tracking branch 'origin/prism_dev'

* origin/prism_dev:
  Merge prism.xml into default.xml.
  Add opensource/tarballs to prism.
  Add manifest file for ONT(prism).

Change-Id: Ifef52880eebed78b1d53fc5961d7b1eb762734f9
tree: 19e03f94cfe05f77f5b5e330061c9ce3d4297d5b
  1. default.xml