Beta PRR update.

Author: carlbraganza

keps/prod-readiness/sig-storage/3314.yaml

@@ -1,3 +1,8 @@
+# The KEP must have an approver from the
+# "prod-readiness-approvers" group 
+# of http://git.k8s.io/enhancements/OWNERS_ALIASES
 kep-number: 3314
 alpha:
   approver: "@soltysh"
+beta:
+  approver: "@soltysh"