Add collectd support for Keystone

Change-Id: I7edb67d2dfb7c70ce2fa0a41df48447c94d0cc22
diff --git a/metadata/service/support.yml b/metadata/service/support.yml
index d982699..1e6a177 100644
--- a/metadata/service/support.yml
+++ b/metadata/service/support.yml
@@ -2,7 +2,7 @@
   keystone:
     _support:
       collectd:
-        enabled: false
+        enabled: true
       heka:
         enabled: true
       sensu:
@@ -10,4 +10,4 @@
       sphinx:
         enabled: true
       config:
-        enabled: true
\ No newline at end of file
+        enabled: true