Version bump to OPR1.170623.019

Change-Id: Ife4cff9197267ff836371c0e2091580f05bc4422
diff --git a/core/build_id.mk b/core/build_id.mk
index 47c1465..986cd2c 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=OPR1.170623.018
+export BUILD_ID=OPR1.170623.019