feature request: @signalk/set-system-time to allow source selection

[voodoomatz]

I have 6 GPS on my N2k bus.

Unfortunately, the one with the lowest SRC ID reports correct time but incorrect date: 2006-01-21T18:23:23Z.
As set-system-time appears to pick simply the first SRC it incorrectly sets the time:
Sep 06 18:23:23 asdf sudo[26471]: signalk : PWD=/home/signalk ; USER=root ; COMMAND=/usr/bin/date --iso-8601 -u -s 2006-01-21T18:23:23Z

A simple selection which source to pick would be highly beneficial.
Also allow me to add that as far as I understand --iso-8601 is not required here as we are writing not reading.

[sbender9]

You probably want to setup Source Priorities anyway? Under Data Connections. This will make so it uses your best source for time if available.

[voodoomatz]

Of course, yet, still I think a source filter would be beneficial.

[sbender9]

Agreed!