Version bump to OPD1.170511.007

Change-Id: Ieebfc9296826e2f8dec98d9f721b680a8befa224
diff --git a/core/build_id.mk b/core/build_id.mk
index 46fcb5c..532563d 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=OPD1.170511.006
+export BUILD_ID=OPD1.170511.007