# custom service_registry module works
$ salt -C MINION sys.doc service_registry.get_all_keys
service_registry.get_all_keys:
    Get all data/items from DynamoDB table in a region hashed by a table key and return it as JSON string.

    Default parameters::
        region = 'us-east-1', table_name = 'ServiceRegistry', table_key = 'key'

    CLI example::

        salt myminion service_registry.get_all_keys region='us-east-1' table_name='ServiceRegistry' table_key='key'
        salt myminion service_registry.get_all_keys


# output is correct
$ salt MINION service_registry.get_all_keys region='eu-west-1'
MINION:
    ----------
    foo1:
      bar1
    foo2:
      bar2
...
...
...


# module called from a state
$ cat service_registry_dump.sls
service_registry_dump:
  module.run:
    - name: service_registry.get_all_keys
    - m_region: eu-west-1

# state execution fails
$ salt MINION state.sls service_registry_dump
MINION:
----------
          ID: service_registry_dump
    Function: module.run
        Name: service_registry.get_all_keys
      Result: False
     Comment: Module function service_registry.get_all_keys threw an exception
     Changes:

Summary
------------
Succeeded: 0
Failed:    1
------------
Total:     1