tests: Remove reboot requirement from dnsmasq tests
tests: Remove reboot requirement from dnsmasq tests

We no longer require reboots when changing dnsServers in config.json
and the service should restart on it's own.

Change-type: patch
Signed-off-by: Kyle Harding <3c25b01657254677d3e1a8fd1f0742c5d489bd39@balena.io>

resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin,resin-os/meta-resin