Version bump to OPD1.170628.006

Change-Id: I21650f6ec32787ad306ee21521ce6e1bff5704df
diff --git a/core/build_id.mk b/core/build_id.mk
index 3c80e31..dacbf95 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-export BUILD_ID=OPD1.170628.005
+export BUILD_ID=OPD1.170628.006