[release-branch.go1.9] go1.9rc2

Change-Id: If95cec0ec7e32cdb450818c4c55e2d03b847ab65
Reviewed-on: https://go-review.googlesource.com/53630
Reviewed-by: Austin Clements <austin@google.com>
diff --git a/VERSION b/VERSION
index e71f694..0a14d06 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.9rc1
\ No newline at end of file
+go1.9rc2
\ No newline at end of file