Start to add a location for contributed useful tasks/flows/more
Start to add a location for contributed useful tasks/flows/more

Make it easy to denote a contrib path under taskflow that will
contain features that others have contributed that we want in taskflow
to bake and to make sure they are useful for others before say
either promoting (or just leaving as is as contributed useful content).

Change-Id: I65658be3856428997bc3a47289e8e1a0938f49e2

jimbobhickville/taskflow,openstack/taskflow,openstack/taskflow,jimbobhickville/taskflow