Description of problem:

[ ERROR ] Failed to execute stage 'Environment customization': 'OVESETUP_PROVISIONING/postgresProvisioningEnabled'

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

4.2

How reproducible:

I think always

Steps to Reproduce:
1. setup engine on machine A
2. install and try to setup dwh on machine B
3.

Actual results:

Fails with above message. log has:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/otopi/context.py", line 132, in _executeMethod
    if method['condition']():
  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine-dwh/db/engine_connection.py", line 51, in <lambda>
    oengcommcons.ProvisioningEnv.POSTGRES_PROVISIONING_ENABLED
KeyError: 'OVESETUP_PROVISIONING/postgresProvisioningEnabled'

Expected results:

Succeeds

Additional info:

Only 4.2 is affected, seems like it was broken by https://gerrit.ovirt.org/86541
. We should really start testing this flow automatically.