Bump fabric-tna version

Change-Id: I855ea5c503c1f734b9aae442ff7cb14cefea85df
diff --git a/Makefile.vars b/Makefile.vars
index dc26e72..5eb740b 100644
--- a/Makefile.vars
+++ b/Makefile.vars
@@ -32,4 +32,4 @@
 export FABRIC_TOFINO_VERSION   ?= e1cf4551b4ab74bb82a7cecf19d197698ffbc1cb
 export UP4_VERSION             ?= cac4b02ef342a0588bc3e1fcfb8d29fef1c0dfd8
 export KAFKA_ONOS_VERSION      ?= 2.4.0-SNAPSHOT
-export FABRIC_TNA_VERSION      ?= 8816a14ff7b5c0e6ab4930902f304fe25cfe616e
+export FABRIC_TNA_VERSION      ?= 02f21ec1599de0a30af5e67ef3ccd528a279e6b8