bump to 17.04.0 GA

Signed-off-by: Victor Vieux <victorvieux@gmail.com>
diff --git a/VERSION b/VERSION
index b24af8c..e0ec43d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-17.04.0-ce-rc2
+17.04.0-ce