Version bump to PPB1.181022.002

Change-Id: I15b1421887f127dd717a68fb50cd9c3d7b03fe76
diff --git a/core/build_id.mk b/core/build_id.mk
index 51be6f2..fcb2b32 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=PPB1.181022.001
+export BUILD_ID=PPB1.181022.002