Removes warning println in version command
Removes warning println in version command

If the gateway is not reachable when executing the version command do
not log a warning, this is expected behaviour and might be confusing

Resolves #451

Signed-off-by: Edward Wilde <0bbf1c8dffb4cb8ad44cb8eb16480f0eb8bfec44@gmail.com>

itscaro/faas-cli,itscaro/faas-cli,itscaro/faas-cli