upload: Move confirmation threshold from 3 to 5 commits

Change-Id: I7275d195cf04f02694206b9f838540b0228ff5e1
diff --git a/subcmds/upload.py b/subcmds/upload.py
index 4dc11d2..4fa5b43 100644
--- a/subcmds/upload.py
+++ b/subcmds/upload.py
@@ -20,7 +20,7 @@
 from editor import Editor
 from error import UploadError
 
-UNUSUAL_COMMIT_THRESHOLD = 3
+UNUSUAL_COMMIT_THRESHOLD = 5
 
 def _ConfirmManyUploads(multiple_branches=False):
   if multiple_branches: