State: - postgres_user
    Name:      yf_dev_master
    Function:  present
        Result:    False
        Comment:   An exception occured in this state: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/salt/state.py", line 1199, in call
    ret = self.states[cdata['full']](*cdata['args'])
  File "/usr/lib/python2.7/dist-packages/salt/states/postgres_user.py", line 59, in present
    if __salt__['postgres.user_exists'](name, runas=runas):
  File "/usr/lib/python2.7/dist-packages/salt/modules/postgres.py", line 314, in user_exists
    runas=runas)
  File "/usr/lib/python2.7/dist-packages/salt/modules/postgres.py", line 256, in user_list
    runas=None).split('.')
AttributeError: 'NoneType' object has no attribute 'split'
----
example-postgres-user:
  postgres_user.present:
    - name: {{ pillar['postgresql']['user'] }}
    - createdb: {{ pillar['postgresql']['createdb'] }}
    - password: {{ pillar['postgresql']['password'] }}
    - runas: postgres
    - require:
      - service: postgresql