Description of problem:
The '-t' parameter doesn't work for oo-install


Version-Release number of selected component (if applicable):
oo-install-3.0.3-1.el7aos.noarch

How reproducible:
100%


Steps to Reproduce:
1. run 'oo-install' as following
#oo-install -a openshift-ansible/ -t openshift-enterprise

Actual results:
TASK: [openshift_repos | assert ] ********************************************* 
failed: [10.66.79.193] => {"assertion": "openshift_deployment_type in known_openshift_deployment_types", "evaluated_to": false, "failed": true}

FATAL: all hosts have already failed -- aborting

PLAY RECAP ********************************************************************



Check the ansible hosts file, the deployment_type is set to None


Expected results:
1. Can install the env successfully
2. suggest to set default value for the '-t' parameter, or set it to required parameter for oo-install

Additional info: