Misc fixes

src/HACKING.md

@@ -1,7 +1,7 @@
 # Overview
 
 This charm is developed as part of the OpenStack Charms project, and as such you
-should refer to the [OpenStack Charm Development Guide](https://github.com/openstack-charmers/openstack-charm-guide) for details on how
+should refer to the [OpenStack Charm Development Guide](https://github.com/openstack/charm-guide) for details on how
 to contribute to this charm.
 
 You can find its source code here: <https://github.com/openstack/charm-aodh>.

src/layer.yaml

@@ -1 +1,5 @@
 includes: ['layer:openstack-api', 'interface:mongodb']
+options:
+  basic:
+    use_venv: True
+    include_system_packages: True

src/metadata.yaml

@@ -9,6 +9,9 @@ description: |
  overall system.
  .
  Aodh provides the Alarming service as part of OpenStack telemetry.
+series:
+  - xenial
+  - trusty
 requires:
   mongodb:
     interface: mongodb