Version bump to OPR1.170623.013

Change-Id: I2751060b33fdd442952eeb5b3d2c0cbe88a0fe93
diff --git a/core/build_id.mk b/core/build_id.mk
index 81da281..d69aafc 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=OPR1.170623.012
+export BUILD_ID=OPR1.170623.013