Add comprehensive test coverage for the coremain package,
focusing on configuration loading, version information, and
output formatting. Test coverage improves from 0% to 59.7%.
Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
The -cpu flag is a weird one (and copied originally from Caddy), it
basically sets GOMAXPROCS which can be *easily* done by just setting
that environment variable. Also with systemd and containerized env you
set this externally *anyway*, so there is little use to do this again in
the binary.
Also the option's help was confusing (i.e. percentage of what?). Remove
the option and supporting files.
Signed-off-by: Miek Gieben <miek@miek.nl>
