network/nfs_stress: cleanup nfs05 test and use nfs_lib.sh

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
diff --git a/runtest/stress.part1 b/runtest/stress.part1
index 622fa01..423d25e 100644
--- a/runtest/stress.part1
+++ b/runtest/stress.part1
@@ -196,10 +196,10 @@
 nfs04 export VERSION=3 SOCKET_TYPE=udp; nfs04
 nfs04 export VERSION=3 SOCKET_TYPE=tcp; nfs04
 
-nfsstress export VERSION=2 SOCKET_TYPE=udp; nfsstress 20 50 1
-nfsstress export VERSION=2 SOCKET_TYPE=tcp; nfsstress 20 50 1
-nfsstress export VERSION=3 SOCKET_TYPE=udp; nfsstress 20 50 1
-nfsstress export VERSION=3 SOCKET_TYPE=tcp; nfsstress 20 50 1
+nfs05 export VERSION=2 SOCKET_TYPE=udp; nfs05
+nfs05 export VERSION=2 SOCKET_TYPE=tcp; nfs05
+nfs05 export VERSION=3 SOCKET_TYPE=udp; nfs05
+nfs05 export VERSION=3 SOCKET_TYPE=tcp; nfs05
 
 nfsx-linux export VERSION=2 SOCKET_TYPE=udp; export TCbin=$LTPROOT/testcases/bin; fsx.sh
 nfsx-linux export VERSION=2 SOCKET_TYPE=tcp; export TCbin=$LTPROOT/testcases/bin; fsx.sh