ltp-networking: standardize test result message

Signed-off-by: Vincent Hsu <vincent.hsu@linaro.org>
ltp-networking/rpc: gave precise test name

Signed-off-by: Vincent Hsu <vincent.hsu@linaro.org>
ltp-networking/nfs: use NFSv3 by default

NFSv3 is more compatible with recent linux distributions.

Signed-off-by: Vincent Hsu <vincent.hsu@linaro.org>
ltp-networking/nfs: remove absolute path for showmount.

Showmount doesn't locate at /user/sbin/showmount on Ubuntu 12.04.

Signed-off-by: Vincent Hsu <vincent.hsu@linaro.org>
ltp-networking/nfs: fix nfsstat01 typo

Signed-off-by: Vincent Hsu <vincent.hsu@linaro.org>