Merge pull request etcd-io#10275 from hexfusion/maint

MAINTAINERS: add Sam Batschelet

Author: hexfusion

MAINTAINERS

@@ -12,6 +12,7 @@ Fanmin Shi <fashi@redhat.com> (@fanminshi) pkg:*
 Gyuho Lee <gyuhox@gmail.com> <leegyuho@amazon.com> (@gyuho) pkg:*
 Hitoshi Mitake <h.mitake@gmail.com> (@mitake) pkg:*
 Joe Betz <jpbetz@google.com> (@jpbetz) pkg:*
+Sam Batschelet <sbatsche@redhat.com> (@hexfusion) pkg:*
 Xiang Li <xiangli.cs@gmail.com> (@xiang90) pkg:*
 
 Ben Darnell <ben@cockroachlabs.com> (@bdarnell) pkg:go.etcd.io/etcd/raft