[SEBA-500] Always generate core models before a migration as service models depend on them

Change-Id: I0f007f9f3d217703869847d6cf570093c7af6363
diff --git a/VERSION b/VERSION
index 5472708..fdacbdb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.56
+2.1.57