Make change and version bump to OPM4.171019.021.R1

Change-Id: Ifa647575875d55c4da371b1f28e8709d38c5467f
diff --git a/core/build_id.mk b/core/build_id.mk
index f4c6477..84f0d91 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=OPM4.171019.021
+export BUILD_ID=OPM4.171019.021.R1