Added support for unscoped access, implemented caching mechanism to reduce API calls to Nova

openstack/conf.yaml.example

@@ -44,6 +44,10 @@ instances:
       # The authorization scope that will be used to request a token from Identity API v3
       # The auth scope must resolve to 1 of the following structures:
       # {'project': {'name': 'my_project', 'domain': 'my_domain} OR {'project': {'id': 'my_project_id'}}
+      #
+      # ALPHA: DO NOT ADD an auth_scope if you wish to have unscoped access
+      #        Simply add the relevant user credentials.
+      #
       auth_scope:
           project:
               id: my_project_id
@@ -79,3 +83,11 @@ instances:
       # Set (optional) custom tags for each metric
       # tags:
       #   - optional:tag1
+
+      # If you need additional tags to submit with your server metrics. 
+      # Please note that server metrics override the host tag and thus do not get
+      # the agent-level tags you may have set.
+      # 
+      # server_tags:
+      #    - foo:bar
+      #    - baz:qux

openstack/datadog_checks/openstack/__init__.py

@@ -2,6 +2,6 @@
 
 OpenStackCheck = openstack.OpenStackCheck
 
-__version__ = "1.2.0"
+__version__ = "1.3.0"
 
 __all__ = ['openstack']