Update meta data with latest info

We haven't refreshed our meta data in a while, this includes updates
to the minimum version of ansible and platforms we test against.

Change-Id: Ia294603b99970a1f3f6b919b9edd768573ccdedd

meta/main.yml

@@ -17,11 +17,15 @@ galaxy_info:
   description: Whisper is a file-based time-series database format for Graphite.
   company: Red Hat, Inc.
   license: Apache
-  min_ansible_version: 2.0
+  min_ansible_version: 2.3
   platforms:
-  - name: EL
+  - name: Fedora
     versions:
-    - 7
+    - 27
+  - name: Ubuntu
+    versions:
+    - 16.04
+    - 18.04
   categories:
-  - cloud
+  - system
 dependencies: []

requirements.txt

@@ -1 +1 @@
-ansible>=2.0.0
+ansible>=2.3.0