Let TripleO generate ODLPassword

Don't specify the password in THT but let TripleO
generate it.

Change-Id: I7e51e2bc91b5e24931299f08a709437408b62fec
Partial-Bug: #1778531

tripleo_common/constants.py

@@ -111,6 +111,7 @@ PASSWORD_PARAMETER_NAMES = (
     'OctaviaCaKeyPassphrase',
     'OctaviaHeartbeatKey',
     'OctaviaPassword',
+    'OpenDaylightPassword',
     'PacemakerRemoteAuthkey',
     'PankoPassword',
     'PcsdPassword',

tripleo_common/tests/actions/test_parameters.py

@@ -151,6 +151,7 @@ _EXISTING_PASSWORDS = {
         'public_key': 'public_key'
         },
     'LibvirtTLSPassword': 'xCdt9yeamKz8Fb6EGba9u82XU',
+    'OpenDaylightPassword': 'abc487gfh017rmviuq75jdiw7',
 }