Add maintainers, organize all by alpha (kubernetes#9438)

Remove comment

OWNERS

@@ -1,19 +1,21 @@
 # Reviewers can /lgtm /approve but not sufficient for auto-merge without an
 # approver
 reviewers:
-- zhangxiaoyu-zidif
-- xiangpengzhao
+- Rajakavitha1
 - stewart-yu
-- Rajakavitha1 
+- xiangpengzhao
+- zhangxiaoyu-zidif
+
 # Approvers have all the ability of reviewers but their /approve makes
 # auto-merge happen if a /lgtm exists, or vice versa, or they can do both
 # No need for approvers to also be listed as reviewers
 approvers:
-- heckj
 - bradamant3
 - bradtopol
-- steveperry-53
-- zacharysarah
 - chenopis
+- kbarnard10
 - mistyhacks
+- steveperry-53
 - tengqm
+- zacharysarah
+- zparnold