cmd/tsuru-admin: add a platform-update command
Merge branch 'master' of github.com:tsuru/tsuru
register platform-update command.
add platform-update handler
add fake platform update method to app packages
Merge branch 'master' of github.com:tsuru/tsuru
add UpdatePlatform to app
add platformUpdate to app package.
Merge branch 'master' of github.com:tsuru/tsuru
force platform update when app is flagged to do it
Merge branch 'master' of github.com:tsuru/tsuru
Merge branch 'master' of github.com:tsuru/tsuru
PlatformUpdate calling PlatformAdd in docker provisioner