Version bump to OPM1.171019.018

Change-Id: I5f0b4af794b2212c724412aa921e42ed21d9aa8f
diff --git a/core/build_id.mk b/core/build_id.mk
index b91acff..7a460f0 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=OPM1.171019.017
+export BUILD_ID=OPM1.171019.018