Update run_tests.sh to the latest revision

Closes-Bug: PROD-12766

Change-Id: I20f2f26c79d922b2973a8632baaac7612af82a37
diff --git a/metadata.yml b/metadata.yml
index 48c699e..4d35e66 100644
--- a/metadata.yml
+++ b/metadata.yml
@@ -1,3 +1,8 @@
 name: "haproxy"
 version: "0.2"
 source: "https://github.com/salt-formulas/salt-formula-haproxy"
+
+# For haproxy/meta/sensu.yml
+dependencies:
+- name: linux
+  source: "https://github.com/salt-formulas/salt-formula-linux"