Description of problem:
Cannot generate overcloud images with liberty because kilo is hardcoded in overcloud_image.py in RDO_RELEASE.

--- a/tripleoclient/v1/overcloud_image.py
+++ b/tripleoclient/v1/overcloud_image.py
@@ -448,7 +448,7 @@ class BuildOvercloudImage(command.Command):
             self._set_env_var(env_vars, 'FS_TYPE', 'xfs')
 
             if env_vars.get('RHOS') == '0':
-                env_vars['RDO_RELEASE'] = 'kilo'
+                env_vars['RDO_RELEASE'] = 'liberty'
                 dib_common_elements.extend([
                     'epel',
                     'rdo-release',


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Install rdo liberty packages and try to build overcloud images.
2.
3.

Actual results:
Fails

Expected results:
Succeeds

Additional info:
What am I missing?