Enable sticky CR+2.

This matches the Chromium config.

Change-Id: Ib3792491243b8f0058ce5beefa361089e06380af
Reviewed-on: https://boringssl-review.googlesource.com/20864
Reviewed-by: David Benjamin <davidben@google.com>

project.config

diff --git a/project.config b/project.config
index f1c342c..c9b1d70 100644
--- a/project.config
+++ b/project.config
@@ -66,6 +66,9 @@
 	function = MaxWithBlock
 	defaultValue = 0
 	copyMinScore = true
+	copyMaxScore = true
+	copyAllScoresOnTrivialRebase = true
+	copyAllScoresIfNoCodeChange = true
 	value = -2 This shall not be merged
 	value = -1 I would prefer this is not merged as is
 	value =  0 No score