Enable console "log" channel when processing --trace in daemons

Summary:
Normally, `--trace` is handled by PhutilArgumentParser, which enables the log channel. For daemons, `--trace` is handled specially, and currently does not enable the log channel, so `--trace` only activates verbose messages, not queries and command execution. Specifically, queries and commands are not currently visible under `phd debug`.

(Probably we should implement standard `--trace` here, but the daemons need some magic around it and this is a simpler fix for the moment.)

Test Plan: Ran `phd debug pulllocal`, saw command execution.

Reviewers: brennantaylor, btrahan, vrana

Reviewed By: brennantaylor

CC: aran

Differential Revision: https://secure.phabricator.com/D4486