Updating OWNERS file

Author: dewan-ahmed

openshift-ci/build-root/OWNERS

@@ -3,18 +3,22 @@
 approvers:
 - sbose78
 - wtam2018
-- bigkevmcd
+- amitkrout
 - chetan-rns
+- jannfis
 
 reviewers:
 - sbose78
 - wtam2018
 - bigkevmcd
 - chetan-rns
-- mitchharpur
+- shubhamagarwal19
 - keithchong
-- tetchel
+- ishitasequeira
 - amitkrout
-- jaideepr97
-- gaganhegde
+- jannfis
+- jopit
+- jgwest
+- reginapizza
+- iam-veeramalla
 - dewan-ahmed