Version bump to OPR2.170623.027

Change-Id: I22fcd13e791d0d3e15a7b4f2a28779e1e4bafa4a
diff --git a/core/build_id.mk b/core/build_id.mk
index fca660c..0ed1da0 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=OPR2.170623.026
+export BUILD_ID=OPR2.170623.027