update owners

OWNERS

@@ -1,8 +1,20 @@
 # See the OWNERS docs at https://go.k8s.io/owners
 
 approvers:
-  - durandom
+  - chauhankaranraj
+  - michaelclifford
+  - pacospace
   - tumido
+
 reviewers:
-  - tumido
+  - aakankshaduggal
+  - chauhankaranraj
+  - hemajv
+  - isabelizimm
+  - margarethaley
+  - michaelclifford
+  - oindrillac
   - pacospace
+  - shreyanand
+  - suppathak
+  - tumido