Add debmirror and watchdog to salt formulas

Change-Id: I5461acfd6f12d9b614c558cbc5250dbb4c064c1a
diff --git a/salt/master/formula/pkg/watchdog.yml b/salt/master/formula/pkg/watchdog.yml
new file mode 100644
index 0000000..9a77953
--- /dev/null
+++ b/salt/master/formula/pkg/watchdog.yml
@@ -0,0 +1,9 @@
+parameters:
+  salt:
+    master:
+      environment:
+        prd:
+          formula:
+            watchdog:
+              source: pkg
+              name: salt-formula-watchdog