Test failed: [ upgrade_engine ]

Link to suspected patches:

Link to Job:

* this is failing since around job run 2291 but was masked by other errors

Link to logs:

Error snippet from log:

<error>

2017-09-05 09:28:45,444-0400 DEBUG otopi.ovirt_engine_setup.engine_common.database database.execute:229 Creating own connection

2017-09-05 09:28:45,448-0400 DEBUG otopi.ovirt_engine_setup.engine_common.database database.execute:274 Result: [{'count': 153L}]

2017-09-05 09:28:45,448-0400 DEBUG otopi.ovirt_engine_setup.engine_common.database database.execute:224 Database: 'None', Statement: 'SHOW server_version', args: {}

2017-09-05 09:28:45,448-0400 DEBUG otopi.ovirt_engine_setup.engine_common.database database.execute:229 Creating own connection

2017-09-05 09:28:45,452-0400 DEBUG otopi.ovirt_engine_setup.engine_common.database database.execute:274 Result: [{'server_version': '9.2.18'}]

2017-09-05 09:28:45,452-0400 DEBUG otopi.ovirt_engine_setup.engine_common.database database.checkServerVersion:449 PostgreSQL server version: 9.2.18

2017-09-05 09:28:45,453-0400 DEBUG otopi.plugins.ovirt_engine_common.ovirt_engine.db.connection connection._setup:146 Existing credential use failed

Traceback (most recent call last):

  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-common/ovirt-engine/db/connection.py", line 141, in _setup

    ] = dbovirtutils.checkDBMSUpgrade()

  File "/usr/share/ovirt-engine/setup/ovirt_engine_setup/engine_common/database.py", line 490, in checkDBMSUpgrade

    self.checkClientVersion()

  File "/usr/share/ovirt-engine/setup/ovirt_engine_setup/engine_common/database.py", line 457, in checkClientVersion

    self.command.get('psql'),

  File "/usr/lib/python2.7/site-packages/otopi/command.py", line 74, in get

    command=command

RuntimeError: Command 'psql' is required but missing

2017-09-05 09:28:45,454-0400 DEBUG otopi.context context._executeMethod:142 method exception

Traceback (most recent call last):

  File "/usr/lib/python2.7/site-packages/otopi/context.py", line 132, in _executeMethod

    method['method']()

  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-common/ovirt-engine/db/connection.py", line 162, in _setup

    raise RuntimeError(msg)

RuntimeError: Cannot connect to Engine database using existing credentials: engine@localhost:5432

2017-09-05 09:28:45,455-0400 ERROR otopi.context context._executeMethod:151 Failed to execute stage 'Environment setup': Cannot connect to Engine database using existing credentials: engine@localhost:5432

</error>