In case of error it shouldn't return help message.

[praveenkumar]

As of now each time there is an error occur then it also return help message which shouldn't be the case.

✗ ./out/gopodman ping                               
NAME:
   gopodman - podman go client

USAGE:
   gopodman [global options] command [command options] [arguments...]

VERSION:
   0.0.1

COMMANDS:
     ping           display podman status
     podmanVersion  display podman version info
     images         List images in local storage
     help, h        Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --podman-varlink-uri value  Podman varlink URI (ex: tcp:127.0.0.1:12345)
   --help, -h                  show help
   --version, -v               print the version
dial tcp 192.168.99.101:12345: connect: operation timed out => this is only what make sense not the whole help message.