Load storyboard projects from projects.yaml

Openstack manages it's projects in projects.yaml file. As we want all of
the projects to have a corresponding entry in storyboard, run the
storyboard projects.yaml loader if projects.yaml changes.

Change-Id: I86367b9980b100bf45f2dd881ca626a16f31cca1
Merge "Load storyboard projects from projects.yaml"