Fast forward only and do not merge content on submit.

Signed-off-by: Dan Cross <dcross@google.com>

project.config

diff --git a/project.config b/project.config
index e3ad13c..a8ddb5c 100644
--- a/project.config
+++ b/project.config
@@ -6,7 +6,8 @@
 	requireChangeId = true
 	enableSignedPush = false
 [submit]
-	mergeContent = true
+	action = fast forward only
+	mergeContent = false
 [capability]
 	administrateServer = group mdb/akaros
 [access "refs/*"]