refactor: use random port listener in kernel log delivery tests

No functional changes, just better tests.

Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>

go.mod

@@ -95,7 +95,7 @@ require (
 	github.com/talos-systems/go-smbios v0.1.1-0.20211122130416-fd5ec8ce4873
 	github.com/talos-systems/grpc-proxy v0.2.0
 	github.com/talos-systems/net v0.3.1-0.20211112122313-0abe5bdae8f8
-	github.com/talos-systems/siderolink v0.0.0-20211125204118-d86cdd59ee7a
+	github.com/talos-systems/siderolink v0.1.0
 	github.com/talos-systems/talos/pkg/machinery v0.14.0-alpha.1.0.20211118180932-1ffa8e048008
 	github.com/u-root/u-root v7.0.0+incompatible
 	github.com/vishvananda/netlink v1.1.1-0.20210330154013-f5de75959ad5

go.sum

@@ -1089,8 +1089,8 @@ github.com/talos-systems/grpc-proxy v0.2.0 h1:DN75bLfaW4xfhq0r0mwFRnfGhSB+HPhK1L
 github.com/talos-systems/grpc-proxy v0.2.0/go.mod h1:sm97Vc/z2cok3pu6ruNeszQej4KDxFrDgfWs4C1mtC4=
 github.com/talos-systems/net v0.3.1-0.20211112122313-0abe5bdae8f8 h1:oT2MASZ8V3DuZbhaJWJ8oZ373zfmgXpvw2xLHM5cOYk=
 github.com/talos-systems/net v0.3.1-0.20211112122313-0abe5bdae8f8/go.mod h1:zhcGixNJz9dgwFiUwc7gkkAqdVqXagU1SNNoIVXYKGo=
-github.com/talos-systems/siderolink v0.0.0-20211125204118-d86cdd59ee7a h1:IFPuVRfl3/Mf+eh3Hqsro1Wsb2Ng31jnNlWRm7OeC9U=
-github.com/talos-systems/siderolink v0.0.0-20211125204118-d86cdd59ee7a/go.mod h1:bEGwDYl9QgC3oZ4kdnJTuR2HX/XlUhxZjx/QAakKuBc=
+github.com/talos-systems/siderolink v0.1.0 h1:7mkJ9EicQ8J9DHHkwiNYGoccCgFcEIFcmfcKRyI7Y+8=
+github.com/talos-systems/siderolink v0.1.0/go.mod h1:bEGwDYl9QgC3oZ4kdnJTuR2HX/XlUhxZjx/QAakKuBc=
 github.com/tchap/go-patricia v2.2.6+incompatible/go.mod h1:bmLyhP68RS6kStMGxByiQ23RP/odRBOTVjwp2cDyi6I=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=

internal/app/machined/pkg/controllers/runtime/kmsg_log_test.go

@@ -8,6 +8,7 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"net"
 	"sync"
 	"testing"
 	"time"
@@ -81,14 +82,17 @@ func (suite *KmsgLogDeliverySuite) SetupTest() {
 
 	suite.handler = &logHandler{}
 
-	suite.srv, err = logreceiver.NewServer(logger, "localhost:4001", suite.handler.HandleLog)
+	listener, err := net.Listen("tcp", "localhost:0")
+	suite.Require().NoError(err)
+
+	suite.srv, err = logreceiver.NewServer(logger, listener, suite.handler.HandleLog)
 	suite.Require().NoError(err)
 
 	go func() {
 		suite.srv.Serve() //nolint:errcheck
 	}()
 
-	suite.cmdline = procfs.NewCmdline(fmt.Sprintf("%s=%s", constants.KernelParamLoggingKernel, "tcp://localhost:4001"))
+	suite.cmdline = procfs.NewCmdline(fmt.Sprintf("%s=%s", constants.KernelParamLoggingKernel, fmt.Sprintf("tcp://%s", listener.Addr())))
 	suite.drainer = talosruntime.NewDrainer()
 
 	suite.Require().NoError(suite.runtime.RegisterController(&controllerruntime.KmsgLogDeliveryController{