Bug 475

DPDK:20.05-rc2
Linux:4.15.0-99-generic 
GCC: Ubuntu 7.5.0-3ubuntu1~18.04
Distribution: Ubuntu 18.04.4 LTS

logs

```
eal_flags_autotest
eal_flags_autotest
Error converting name fd 0 .:
Error converting name fd 0 ..:
Running binary with argv[]:'/home/saesrv02/Downloads/dpdksrc/dpdk/x86_64-native-linuxapp-gcc/app/test' '--file-prefix=test2' '--proc-type=secondary'
EAL: Detected 88 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/test2/mp_socket_36971_6e46f8e2994910
EAL: failed to send to (/var/run/dpdk/test2/mp_socket) due to No such file or directory
EAL: Fail to send request /var/run/dpdk/test2/mp_socket:bus_vdev_mp
vdev_scan(): Failed to request vdev from primary
EAL: Selected IOVA mode 'VA'
EAL: Probing VFIO support...
No telemetry legacy support - No legacy callbacks, legacy socket not created
Error converting name fd 0 .:
Error converting name fd 0 ..:
Running binary with argv[]:'/home/saesrv02/Downloads/dpdksrc/dpdk/x86_64-native-linuxapp-gcc/app/test' '--file-prefix=test2' '--proc-type=secondary' '-c'
/home/saesrv02/Downloads/dpdksrc/dpdk/x86_64-native-linuxapp-gcc/app/test: option requires an argument -- 'c'
EAL: Detected 88 lcore(s)
EAL: Detected 2 NUMA nodes
/home/saesrv02/Downloads/dpdksrc/dpdk/x86_64-native-linuxapp-gcc/app/test: option requires an argument -- 'c'
```