tests/vty/vty_test.ok

Going to test vty_cmd_string_from_valstr()
Tested with %s-strings, resulting cmd = '[prefix%s%s%s%s%s][foo%s%s%s%s%s][sep%s%s%s%s%s][bar%s%s%s%s%s][end%s%s%s%s%s]'
All tests passed