Changes made:
- Removal of Big Tent and adding Official OpenStack project
- Removal of Stackforge
- Add definition of Official OpenStack project
- Focus more on the definition than on the process description
Change-Id: Ia8d5c0d41c7fc72ca2fbc4a1759a1077470e3dca
Signed-off-by: csatari <gergely.csatari@nokia.com>