Issue

• When upgrading rhev, running rhev-dwh-setup fails with:

2014-06-04 05:52:10::DEBUG::common_utils::915::root:: Executing command --> '/bin/su -l postgres -c /usr/bin/psql -U postgres -tA -c "select 1 from pg_roles where rolname='readonly';"' in working directory '/root'
2014-06-04 05:52:10::DEBUG::common_utils::970::root:: output =
2014-06-04 05:52:10::DEBUG::common_utils::971::root:: stderr = Password for user postgres:
psql: fe_sendauth: no password supplied

2014-06-04 05:52:10::DEBUG::common_utils::972::root:: retcode = 2
2014-06-04 05:52:10::ERROR::rhevm-dwh-setup::703::root:: Exception caught!
2014-06-04 05:52:10::ERROR::rhevm-dwh-setup::704::root:: Traceback (most recent call last):
  File "/usr/bin/rhevm-dwh-setup", line 485, in main
    while not utils.userValid(readonly_user):
  File "/usr/share/ovirt-engine-dwh/common_utils.py", line 1564, in userValid
    output, rc = runPostgresSuQuery(sql_query)
  File "/usr/share/ovirt-engine-dwh/common_utils.py", line 1505, in runPostgresSuQuery
    stdIn=stdIn,
  File "/usr/share/ovirt-engine-dwh/common_utils.py", line 975, in execCmd
    raise Exception(msg)
Exception: Return Code is not zero