Update libcontainer Context changes

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Upstream-commit: c9fdb08bdafb90b76cfa804b079d2e446a3503e4
Component: engine

components/engine/daemon/execdriver/native/template/default_template.go

@@ -35,11 +35,10 @@ func New() *libcontainer.Config {
 			AllowAllDevices: false,
 		},
 		MountConfig: &libcontainer.MountConfig{},
-		Context:     make(map[string]string),
 	}
 
 	if apparmor.IsEnabled() {
-		container.Context["apparmor_profile"] = "docker-default"
+		container.AppArmorProfile = "docker-default"
 	}
 
 	return container