create debian/platform-0.9 branch
so we can start building and testing debs for platform 0.9
(from redmine: created on 2015-12-08, closed on 2015-12-15, relates #7623)
so we can start building and testing debs for platform 0.9
(from redmine: created on 2015-12-08, closed on 2015-12-15, relates #7623)