Make change and version bump to OPM7.181205.001

Change-Id: If16edc4059c8b0bc62361a47ac35e81d13def3c3
diff --git a/core/build_id.mk b/core/build_id.mk
index 635f9fc..0a23589 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=OPM7.181201.001
+export BUILD_ID=OPM7.181205.001