Merge pull request kubernetes#1719 from pmorie/sig-mc-owners

Update sig-multicluster-leads alias

Author: k8s-ci-robot

OWNERS_ALIASES

@@ -48,7 +48,7 @@ aliases:
     - dashpole
     - logicalhan
   sig-multicluster-leads:
-    - csbell
+    - pmorie
     - quinton-hoole
   sig-network-leads:
     - thockin