Swap out owners for keystore frameworks bits

Change-Id: I94b27b4d630ba05351c6570eb2283c97c4d636c7
diff --git a/keystore/OWNERS b/keystore/OWNERS
index 6891777..ea783e7 100644
--- a/keystore/OWNERS
+++ b/keystore/OWNERS
@@ -1,5 +1,6 @@
 # Bug component: 189335
+ascull@google.com
 drysdale@google.com
-eranm@google.com
 jbires@google.com
+sethmo@google.com
 swillden@google.com