Add support for new OpenStack modules

Incoming cloud config for OpenStack is complex due to plugins and
deployer choices. Rather than having the logic spread all over the
OpenStack modules, centralize it in the module_utils code.

lib/ansible/module_utils/openstack.py

@@ -30,6 +30,9 @@ import os
 
 
 def openstack_argument_spec():
+    # DEPRECATED: This argument spec is only used for the deprecated old
+    # OpenStack modules. It turns out that modern OpenStack auth is WAY
+    # more complex than this.
     # Consume standard OpenStack environment variables.
     # This is mainly only useful for ad-hoc command line operation as
     # in playbooks one would assume variables would be used appropriately
@@ -67,3 +70,40 @@ def openstack_find_nova_addresses(addresses, ext_tag, key_name=None):
                     ret.append(interface_spec['addr'])
     return ret
 
+def openstack_full_argument_spec(**kwargs):
+    spec = dict(
+        cloud=dict(default=None),
+        auth_plugin=dict(default=None),
+        auth=dict(default=None),
+        auth_token=dict(default=None),
+        region_name=dict(default=None),
+        availability_zone=dict(default=None),
+        state=dict(default='present', choices=['absent', 'present']),
+        wait=dict(default=True, type='bool'),
+        timeout=dict(default=180, type='int'),
+        endpoint_type=dict(
+            default='publicURL', choices=['publicURL', 'internalURL']
+        )
+    )
+    spec.update(kwargs)
+    return spec
+
+
+def openstack_module_kwargs(**kwargs):
+    ret = dict(
+        required_one_of=[
+            ['cloud', 'auth'],
+        ],
+        mutually_exclusive=[
+            ['auth', 'auth_token'],
+            ['auth_plugin', 'auth_token'],
+        ],
+    )
+    for key in ('mutually_exclusive', 'required_together', 'required_one_of'):
+        if key in kwargs:
+            if key in ret:
+                ret[key].extend(kwargs[key])
+            else:
+                ret[key] = kwargs[key]
+
+    return ret