dnsmasq: prefer localuse over resolvfile guesswork

dnsmasq: prefer localuse over resolvfile guesswork

This makes it clear that localuse when explicitly specified in the
config will have its final say on whether or not the initscript should
touch /etc/resolv.conf, no matter whatever the result of previous
guesswork would be

(cherry picked from c17a68cc61a0f8a28e19c7f60b24beaf1a1a402d)
Tested-by: Paul Oranje <[email protected]>
Signed-off-by: Yousong Zhou <[email protected]>
Acked-by: Hans Dedecker <[email protected]>
Acked-by: Paul Oranje <[email protected]>