Add OS family to the Hiera hierarchy

Also adds the -family- part to distinguish the RedHat OS family from the
RedHat (aka RHEL) OS.

Author: ekohl

data/RedHat-7.yaml renamed to data/RedHat-family-7.yaml

@@ -9,6 +9,8 @@ hierarchy:
   - name: 'Distribution Name'
     path: '%{facts.os.name}.yaml'
   - name: 'OS Family Major Version'
-    path: '%{facts.os.family}-%{facts.os.release.major}.yaml'
+    path: '%{facts.os.family}-family-%{facts.os.release.major}.yaml'
+  - name: 'OS Family'
+    path: '%{facts.os.family}-family.yaml'
   - name: 'common'
     path: 'common.yaml'