Add action alias unit test for orion.start_discovery and print error for missing community
Add action alias unit test for orion.start_discovery and print error for missing community

armab/st2contrib,armab/st2contrib,tonybaloney/st2contrib,tonybaloney/st2contrib,armab/st2contrib,StackStorm/st2contrib,StackStorm/st2contrib,StackStorm/st2contrib,tonybaloney/st2contrib