Manual review request for 'ivpn' package and auto-connect interfaces

I see, the similar problem already discussed:

Looks like the topic is still open.

The main question is:
Is there any universal solution to changing DNS settings on the host machine?
(the solution which works on any distro where snapd installed but without direct access of /etc/resolv.conf)

If not - can the ivpn package be approved to publish on Snap Store with the system-files interface (with r/w access for /etc/resolv.conf)?