Version bump to OPD1.170501.002

Change-Id: I95afe512955d6709fcf51c344521ae28a29de59c
diff --git a/core/build_id.mk b/core/build_id.mk
index 29e2a3f..a2f0472 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=OPD1.170501.001
+export BUILD_ID=OPD1.170501.002