Enable monochrome output in the 'up' and 'logs' commands

Some systems, like Jenkins or other build servers, cannot correctly render ANSI color codes.  The '-m' option enable monochrome output in the 'up' and 'logs' commands to improve readability in those systems.

Let me know if you have any concerns.  I'm happy to make revisions.

Signed-off-by: Tim Freund <tim@freunds.net>