connecting a non-auto interface, automatically

[knitzsche]

What is the approach to connect interfaces that are not auto-connecting 
without user intervention?

That is, there's a snap (built into an image) that declares the 
log-observe plug. Log-observe interface does not auto-connect [1]. In 
this product, the user does not have a console, so they cannot connect 
the snap plug/interface.

So, how does one configure the system to connect sthis? Via the gadget 
snap prepare-device hook script perhaps?

Cheers,
kyleN

[1] https://docs.ubuntu.com/core/en/reference/interfaces/index