network/nfs05: rewrite the test, make use of new library

* remove dynamic allocation of memory, use asprintf in few places;
* run built binaries and check that they print correct message;
* run tst_run_cmd() to call make/make clean;
* clean directories with tst_rmdir library.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
3 files changed