bin/dochazka-cli: add rudimentary custom completion function
bin/dochazka-cli: add rudimentary custom completion function

This does not provide any custom completion, but it does get rid of
"Undefined subroutine &main::dochazka_cli_completion called at
/usr/lib/perl5/vendor_perl/5.22.0/x86_64-linux-thread-multi/Term/ReadLine/Gnu.pm
line 719, <STDIN> line 2" crash when someone hits TAB.

Signed-off-by: Nathan Cutler <f9d8c66a4e898e67db786769b5b347b640e1a9a6@suse.com>

smithfarm/dochazka-cli