Update test suite for the new TFKit version

tests/cli/TF_RUN

@@ -7,15 +7,13 @@ tf_enum_subtests() {
     echo usage
 }
 
-tf_name2cmd() {
+tf_do_subtest() {
     local name=$1
     local cmd
     local o_err="oracle/$name.stderr"
-    local o_es=0
     case $name in
-        usage)       cmd="satcmd"; o_es=2 ;;
+        usage)  tf_testflt -n "$name" -E "$o_err" -S 2 satcmd ;;
     esac
-    echo "tf_testflt -n $name -E $o_err -S $o_es $cmd"
 }
 
 tf_do_subtests