MB-21
i've created tests for create_server and delete_server but some tests
are not running well so i need to revisit them. (test create_server when
adding a server tagged by accounts other than wot; wot account should
always be added.)
MB-21
implemented pdtap tests for create_server and delete_server. some tests
are not running well so i need to revisit them (creating a server and
tagging it ith accounts not including wot account; wot account should
automatically be added)