rulecat: Tweak log levels.

[jasonish]

Right now, the default log level is info, adding -v is debug. A better option for -v is somewhere between debug and info, then perhaps -vv for debug.

One idea:

• Default: Notice logging. Most logs you see now without -v would be notice.
• Info with -v, this would be quite verbose but not low level debugging messages.
• Debug with -vv.

[jasonish]

I'm indifferent now.