Version bump to OPR4.170623.008

Change-Id: I8fcee2d1f6eefd29d6d95f06d18b5a124e362bc5
diff --git a/core/build_id.mk b/core/build_id.mk
index a232c78..23c7be2 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=OPR4.170623.007
+export BUILD_ID=OPR4.170623.008