Show daemon arguments when launching a daemon with `./bin/phd`.
Summary: Ref T4735. When launching daemons (with `./bin/phd start` or `./bin/phd launch`), print the arguments that are specified for the daemon.
Test Plan:
Ran `./bin/phd launch repo -- --not X`.
```
> sudo ./bin/phd launch repo -- --not X
Preparing to launch daemons.
NOTE: Logs will appear in '/mnt/logs/phd/daemons.log'.
Launching daemon "PhabricatorRepositoryPullLocalDaemon" with arguments ["--not","X"].
```
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T4735
Differential Revision: https://secure.phabricator.com/D9205
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