Add support for prometheus

Add docker input

Change-Id: Ic8de00d37fecad5e6197f95f5852b60028688191
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
new file mode 100644
index 0000000..a4b5e81
--- /dev/null
+++ b/metadata/service/support.yml
@@ -0,0 +1,5 @@
+parameters:
+  telegraf:
+    _support:
+      prometheus:
+        enabled: true