Version bump to OPD1.170511.006

Change-Id: I6f8a18518e2526867252a0672ac3e21b8379f058
diff --git a/core/build_id.mk b/core/build_id.mk
index 15ca0c9..46fcb5c 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=OPD1.170511.005
+export BUILD_ID=OPD1.170511.006