A lot of our config option reference documentation was out of date, with
deprecated and removed options and changed defaults. This changes the
"Additional options" configuration reference to use the config-table
directive so the published docs stay in sync with changes in the code.
Closes-bug: #1814910
Change-Id: Ib891435dc69eb795ea6d4d0fb6626259e95cf27f
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>