FIX: set the choices for the intelmqctl log subcommand
FIX: set the choices for the intelmqctl log subcommand

The log subcommand only works on configured bots, so the bot_id should
be one of specific set of choices.

Closes #1935

certtools/intelmq,aaronkaplan/intelmq,certtools/intelmq,aaronkaplan/intelmq,certtools/intelmq,aaronkaplan/intelmq