Make change and version bump to PQ3B.190401.001

Change-Id: I7ca9a8afd28b24551ec3add6219b8d27a4eb560d
diff --git a/core/build_id.mk b/core/build_id.mk
index 932e214..c39cf20 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=PI
+export BUILD_ID=PQ3B.190401.001