Add configuration group support for SD-Routing devices

[tzarski0]

Problem Statement

When SD-Routing support was introduced, there was no configuration group support for SD-Routing. Now SD-Routing supports configuration groups so onboarding should support it too. First we need to make sure sastre will support it.

[tzarski0]

#55 needs to be implemented first

[tzarski0]

Needs #75 first

[tzarski0]

done in #148