Harshavardhana e0cb814f3f
fail if port is not accessible (#10616)
throw proper error when port is not accessible
for the regular user, this is possibly a regression.

```
ERROR Unable to start the server: Insufficient permissions to use specified port
   > Please ensure MinIO binary has 'cap_net_bind_service=+ep' permissions
   HINT:
     Use 'sudo setcap cap_net_bind_service=+ep /path/to/minio' to provide sufficient permissions
```
2020-10-01 13:23:31 -07:00
..