Updates AdguardTeam/AdGuardHome#2624.
Updates AdguardTeam/AdGuardHome#3162.

Squashed commit of the following:

commit 62e9cf4249d92d2a3be7a4725b67875f05518576
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Jun 23 15:15:36 2021 +0300

    all: fix go1.15 compat

commit 096b0d857706348e1c21906590431f8d0fd0bc1b
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Jun 23 15:10:53 2021 +0300

    all: add requestid, refactor