Updates to OWNERS file

Tried to prune out folks no longer on the team and add folks who I knew should be on  (like me 😄 ).  If I missed any, please let me know.

Author: grokspawn

OWNERS

@@ -1,23 +1,21 @@
 approvers:
-  - njhale
   - dinhxuanvu
   - kevinrizza
-  - gallettilance
   - anik120
   - awgreene
   - ankitathomas
   - joelanford
-  - timflannagan
   - perdasilva
+  - oceanc80
+  - grokspawn
 reviewers:
   - dinhxuanvu
   - kevinrizza
-  - benluddy
-  - gallettilance
   - anik120
   - awgreene
   - ankitathomas
   - joelanford
-  - timflannagan
   - perdasilva
+  - oceanc80
+  - grokspawn
 component: "OLM"