Add elsk to the owner of scripts

Test: build
Change-Id: Ia722605596c354d4e295a6d18a2696fdf90c582c
diff --git a/tools/releasetools/OWNERS b/tools/releasetools/OWNERS
index a8295d4..d7fc540 100644
--- a/tools/releasetools/OWNERS
+++ b/tools/releasetools/OWNERS
@@ -1,3 +1,4 @@
+elsk@google.com
 nhdo@google.com
 xunchang@google.com
 zhaojiac@google.com