Refactor and reduce

The module in its previous incarnation was unnecessarily hard to read
and use. This commit applies the "params" pattern in order to more
clearly deliniate between logical variable selection and actual
declarative configuration.

tests/init.pp

@@ -1,10 +1,4 @@
-node default {
-
-  notify { "alpha": } ->
-  class { 'java':
-    distribution => 'jdk',
-    version      => 'latest',
-  } ->
-  notify { "omega": }
-
+class { 'java':
+  distribution => 'jdk',
+  version      => 'latest',
 }