Fixed a syntax error in nfs_test_mount

Signed-off-by: Olaf Kirch <okir@suse.de>
Introduce testbus-control-kvm and test suite runners

Signed-off-by: Olaf Kirch <okir@suse.de>
Fixed some bugs in nfs test suite

Signed-off-by: Olaf Kirch <okir@suse.de>