Pull request: 3868 imp service uninstall

Merge in DNS/adguard-home from 3868-imp-uninstall to master

Closes #3868.
Updates #3457.

Squashed commit of the following:

commit 6f50713407980c27e5b14bef4dc8839e134ec5c8
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Dec 27 19:06:13 2021 +0300

    all: imp openwrt

commit 59f058f8ec7f5ac8cb795bf837c396601652a6ff
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Dec 27 17:26:32 2021 +0300

    all: imp code && docs

commit bab95366b0ffa40d96de5bb8116ec14606e310ed
Merge: 92ebc210 52f36f20
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Dec 27 17:06:25 2021 +0300

    Merge branch 'master' into 3868-imp-uninstall

commit 92ebc210f04d5e02c3eef726017a0d5687f4bc4c
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Dec 27 13:18:58 2021 +0300

    home: imp freebsd script & log changes

commit 583ffc256e9f87cf19da2eca8bbefc9e00ea86cc
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Dec 16 14:08:46 2021 +0300

    all: imp service uninstall

CHANGELOG.md

@@ -23,12 +23,14 @@ and this project adheres to
 
 <!--
     TODO(a.garipov): Remove this deprecation, if v0.108.0 is released before
-    that.
+    the Go 1.18 release.
 -->
 - Go 1.17 support.  v0.109.0 will require at least Go 1.18 to build.
 
 ### Fixed
 
+- Service not being stopped before running the `uninstall` service action
+  ([#3868]).
 - Legacy DNS rewrites responding from upstream when a request other than `A` or
   `AAAA` is received ([#4008]).
 - Panic on port availability check during installation ([#3987]).
@@ -38,6 +40,7 @@ and this project adheres to
 - Go 1.16 support.
 
 [#3057]: https://github.com/AdguardTeam/AdGuardHome/issues/3057
+[#3868]: https://github.com/AdguardTeam/AdGuardHome/issues/3868
 [#3987]: https://github.com/AdguardTeam/AdGuardHome/issues/3987
 [#4008]: https://github.com/AdguardTeam/AdGuardHome/issues/4008