Felipe Lalanne 67d1503b54 Allow using colon character in config vars
The Raspberry Pi config.txt file defines the use of colon to configure
variables of the same name in different ports, for instance on those
devices with two hdmi ports. This syntax was previously not supported by
the supervisor. This change relaxes the syntax validation on config vars
to allow the use of the colon character.

Relates-to: #1573, #2046
Change-type: minor
2023-01-20 15:48:32 -03:00
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