Introduce interfaces.SecurityBackendOptions for passing Preseed mode flag to backends via Initialize(). Change maybeRestart to a method of snap manager.

interfaces/backends/backends.go

@@ -30,7 +30,6 @@ import (
 	"github.com/snapcore/snapd/interfaces/seccomp"
 	"github.com/snapcore/snapd/interfaces/systemd"
 	"github.com/snapcore/snapd/interfaces/udev"
-	"github.com/snapcore/snapd/release"
 	apparmor_sandbox "github.com/snapcore/snapd/sandbox/apparmor"
 )
 
@@ -72,11 +71,7 @@ func backends() []interfaces.SecurityBackend {
 	// profiles that keep applications operational, in forced-devmode.
 	switch apparmor_sandbox.ProbedLevel() {
 	case apparmor_sandbox.Partial, apparmor_sandbox.Full:
-		aa := &apparmor.Backend{}
-		if release.PreseedMode() {
-			aa.SetPreseedMode()
-		}
-		all = append(all, aa)
+		all = append(all, &apparmor.Backend{})
 	}
 	return all
 }