Update DriverFramework version

LorenzMeier · LorenzMeier · commit cef1e79b00d8 · 2016-05-03T10:04:55.000+02:00
diff --git a/src/lib/DriverFramework b/src/lib/DriverFramework
@@ -1 +1 @@
-Subproject commit 0b57c455e4eb789f5132c46af958517eada55cb5
+Subproject commit 451921ca91c4fc7b28d9d0c453539aecb580e839
