Version bump to OPR2.170623.004

Change-Id: I68550bcffabf07e80840ea02b21dca6f5ca64424
diff --git a/core/build_id.mk b/core/build_id.mk
index a6428f8..bdea667 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=OPR2.170623.003
+export BUILD_ID=OPR2.170623.004