Update test for TFKit 0.0.15

tests/pretty_basic/TF_SETUP

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-case $TF_SUBTNAME in
+case $TF_SUBTEST in
     v0_d0_*) PRETTY_VERBOSE=false; PRETTY_DEBUG=false ;;
     v0_d1_*) PRETTY_VERBOSE=false; PRETTY_DEBUG=true  ;;
     v1_d0_*) PRETTY_VERBOSE=true;  PRETTY_DEBUG=false ;;