Adds methods for share and share_type

This methods allow calling api call from salt

Added share_type_present
to create or update share type

Added share_type_absent
to delete share_type

Add's example of sls

Change-Id: Ib349c1b495e8cb155195190afd614db55c55a238
Related-Issue: PROD-18221
diff --git a/_modules/manilang/common.py b/_modules/manilang/common.py
new file mode 100644
index 0000000..47bcfd8
--- /dev/null
+++ b/_modules/manilang/common.py
@@ -0,0 +1,98 @@
+# Copyright 2018 Mirantis Inc
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import logging
+
+import os_client_config
+
+
+MANILA_HEADER = 'X-OpenStack-Manila-API-Version'
+
+
+log = logging.getLogger(__name__)
+
+
+class ManilaException(Exception):
+
+    _msg = "Manila module exception occured."
+
+    def __init__(self, message=None, **kwargs):
+        super(ManilaException, self).__init__(message or self._msg)
+
+
+class NoManilaEndpoint(ManilaException):
+    _msg = "Manila endpoint not found in keystone catalog."
+
+
+class NoAuthPluginConfigured(ManilaException):
+    _msg = ("You are using keystoneauth auth plugin that does not support "
+            "fetching endpoint list from token (noauth or admin_token).")
+
+
+class NoCredentials(ManilaException):
+    _msg = "Please provide cloud name present in clouds.yaml."
+
+
+def _get_raw_client(cloud_name):
+    service_type = 'sharev2'
+    adapter = os_client_config.make_rest_client(service_type,
+                                                cloud=cloud_name)
+    try:
+        access_info = adapter.session.auth.get_access(adapter.session)
+        endpoints = access_info.service_catalog.get_endpoints()
+    except (AttributeError, ValueError):
+        e = NoAuthPluginConfigured()
+        log.error('%s' % e)
+        raise e
+    if service_type not in endpoints:
+        service_type = None
+        for possible_type in ('share', 'shared-file-system'):
+            if possible_type in endpoints:
+                service_type = possible_type
+                break
+        if not service_type:
+            e = NoManilaEndpoint()
+            log.exception('%s' % e)
+            raise e
+        adapter = os_client_config.make_rest_client(service_type,
+                                                    cloud=cloud_name)
+    log.debug("Using manila endpoint with type %s." % service_type)
+    return adapter
+
+
+def send(method, microversion_header=None):
+    def wrap(func):
+        def wrapped_f(*args, **kwargs):
+            headers = kwargs.pop('headers', {})
+            if kwargs.get('microversion'):
+                headers.setdefault(microversion_header,
+                                   kwargs.get('microversion'))
+            cloud_name = kwargs.pop('cloud_name')
+            if not cloud_name:
+                e = NoCredentials()
+                log.error('%s' % e)
+                raise e
+            adapter = _get_raw_client(cloud_name)
+            url, json = func(*args, **kwargs)
+            if json:
+                response = getattr(adapter, method)(url, headers=headers,
+                                                    json=json)
+            else:
+                response = getattr(adapter, method)(url, headers=headers)
+            if not response.content:
+                return {}
+            return response.json()
+        return wrapped_f
+    return wrap