Increased upper Ansible test range to Ansible 2.8 (#62)

Ensure this role works with Ansible 2.8.

Author: freemanjp

.moleculew/ansible_version

@@ -1 +1 @@
-2.7.0
+2.8.2

.travis.yml

@@ -8,7 +8,7 @@ env:
   matrix:
     # Spin off separate builds for each of the following versions of Ansible
     - MOLECULEW_ANSIBLE=2.5.10
-    - MOLECULEW_ANSIBLE=2.7.0
+    - MOLECULEW_ANSIBLE=2.8.2
 
 # Require the standard build environment
 sudo: required