Version bump to OPR6.170623.019

Change-Id: I6066ca9198eb344ffec7a5119d5144cb7ccd71ed
diff --git a/core/build_id.mk b/core/build_id.mk
index bd4584d..223876a 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -30,4 +30,4 @@
 # https://docs.google.com/document/d/17eqVTxMc2do05T6qwt4eASVyxy8u3Cme4u4fVD5q0VM/view#
 #
 
-export BUILD_ID=OPR6.170623.018
+export BUILD_ID=OPR6.170623.019