FEATURE: "check" subcommand should send to stdout (#1755)
FEATURE: "check" subcommand should send to stdout (#1755)

Co-authored-by: Grant Slater <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@firefishy.com>
StackExchange/dnscontrol,StackExchange/dnscontrol,StackExchange/dnscontrol