Add release 0.6.x to metadata.yaml

mdbooth · k8s-infra-cherrypick-robot · commit c0d7fd986bdb · 2022-04-27T18:48:14.000Z
diff --git a/metadata.yaml b/metadata.yaml
@@ -10,3 +10,6 @@ releaseSeries:
 - major: 0
   minor: 5
   contract: v1beta1
+- major: 0
+  minor: 6
+  contract: v1beta1
