2019-02-07: FG; Updated metadata, so default version downloaded with charm...

2019-02-07:  FG;  Updated metadata, so default version downloaded with charm pull is the last one (38, at time of writing).

metadata.yaml

@@ -11,8 +11,8 @@ tags:
   - misc
 series:
   - xenial
-  - artful
-  - zesty
+  - bionic
+  - cosmic
   - trusty
 extra-bindings:
   public: