Merge pull request #60 from slimakcz/nf_backupninja_only

added backupninja support, by default is disable

metadata/service/support.yml

@@ -15,3 +15,5 @@ parameters:
         enabled: true
       sphinx:
         enabled: true
+      backupninja:
+        enabled: true

salt/meta/backupninja.yml

@@ -0,0 +1,5 @@
+backup:
+  salt:
+    fs_includes:
+    - /srv/salt/reclass
+    fs_excludes: []