Version bump to OPD1.170816.019

Change-Id: I79f95003790ec10465edd4f1697c982ab65712f4
diff --git a/core/build_id.mk b/core/build_id.mk
index c8c6f3a..7c094b2 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=OPD1.170816.018
+export BUILD_ID=OPD1.170816.019