Apply patch from jlaska.  Adds support for .yaml file extensions on playbooks.  Implements AC-890
Apply patch from jlaska.  Adds support for .yaml file extensions on playbooks.  Implements AC-890

snahelou/awx,snahelou/awx,wwitzel3/awx,wwitzel3/awx,wwitzel3/awx,snahelou/awx,snahelou/awx,wwitzel3/awx