E2E: add test for the unnumbered BGP peering

The test requires point-to-point connection so we cannot use any
existing infra peer. Therefore a new peer (docker container)
runs with no network, and point-to-point connections are created using
`sudo ip` commands.

There are three specs
```
Unnumbered BGP session is established and routes are verified iBGP
Unnumbered BGP session is established and routes are verified eBGP
Unnumbered eBGP with BFD peering with native config should be validated
```

A new checking route function is added that executes directly on container
`ip {-4,-6} --json ip route show proto bgp dev net0` command it returns
a `map[netip.Prefix]map[netip.Addr]`. The use of netip.{prefix,addr}
allows direct comparison and no extra loop logic is needed. The output
is also more clear when fails, for example
```
  Unexpected error:
      <*errors.errorString | 0xc000069780>:
      want map[2.2.1.0/24:map[fe80::b4d8:92ff:fe73:1c5a:{}] ...
       got map[2.2.2.0/24:map[fe80::b4d8:92ff:fe73:1c5a:{}] ...
       diff   map[netip.Prefix]map[netip.Addr]struct{}{
      -         s"2.2.1.0/24": {s"fe80::b4d8:92ff:fe73:1c5a": {}},
      +         s"2.2.2.0/24": {s"fe80::b4d8:92ff:fe73:1c5a": {}},
        }
```

The test is implemented in way that parallel run is allowed (-p in
ginkgo), in case we want to start run e2e in parallel.

Signed-off-by: karampok <karampok@gmail.com>

e2etests/e2etest_suite_test.go

@@ -47,6 +47,7 @@ func handleFlags() {
 		runOnHost = true
 	}
 	dump.ReportPath = reportPath
+	tests.FRRImage = frrImage
 }
 
 func TestMain(m *testing.M) {

e2etests/go.mod

@@ -6,33 +6,40 @@ toolchain go1.22.4
 
 replace (
 	github.com/metallb/frr-k8s => ../
-	go.universe.tf/e2etest => github.com/metallb/metallb/e2etest v0.0.0-20240715121012-af3c10d65f18
+	go.universe.tf/e2etest => github.com/karampok/metallb/e2etest v0.0.0-20241204133905-1d918d641ee8
 	go.universe.tf/metallb => github.com/metallb/metallb v0.14.5
 )
 
 require (
-	github.com/metallb/frr-k8s v0.0.11
+	github.com/google/go-cmp v0.6.0
+	github.com/metallb/frr-k8s v0.0.16
 	github.com/onsi/ginkgo/v2 v2.19.0
 	github.com/onsi/gomega v1.33.1
 	github.com/openshift-kni/k8sreporter v1.0.4
 	github.com/prometheus/client_model v0.6.1
 	github.com/prometheus/common v0.55.0
 	go.universe.tf/e2etest v0.0.0-00010101000000-000000000000
-	k8s.io/api v0.31.0
-	k8s.io/apimachinery v0.31.0
-	k8s.io/client-go v0.31.0
+	k8s.io/api v0.31.1
+	k8s.io/apimachinery v0.31.1
+	k8s.io/client-go v0.31.1
 	k8s.io/utils v0.0.0-20240711033017-18e509b52bc8
 	sigs.k8s.io/controller-runtime v0.19.0
 )
 
 require (
+	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
+	github.com/MakeNowJust/heredoc v1.0.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver/v4 v4.0.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/chai2010/gettext-go v1.0.2 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/emicklei/go-restful/v3 v3.12.1 // indirect
 	github.com/evanphx/json-patch/v5 v5.9.0 // indirect
+	github.com/exponent-io/jsonpath v0.0.0-20151013193312-d6023ce2651d // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
+	github.com/go-errors/errors v1.4.2 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/zapr v1.3.0 // indirect
 	github.com/go-openapi/jsonpointer v0.21.0 // indirect
@@ -43,46 +50,68 @@ require (
 	github.com/golang/glog v1.0.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/btree v1.0.1 // indirect
 	github.com/google/gnostic-models v0.6.8 // indirect
-	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/google/pprof v0.0.0-20240525223248-4bfdf5a9a2af // indirect
+	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
+	github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7 // indirect
 	github.com/imdario/mergo v0.3.16 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
+	github.com/moby/spdystream v0.4.0 // indirect
+	github.com/moby/term v0.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
+	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/client_golang v1.19.1 // indirect
 	github.com/prometheus/procfs v0.15.1 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/spf13/cobra v1.8.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
+	github.com/xlab/treeprint v1.2.0 // indirect
+	go.starlark.net v0.0.0-20230525235612-a134d8f9ddca // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	go.universe.tf/metallb v0.13.7 // indirect
 	golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 // indirect
 	golang.org/x/net v0.26.0 // indirect
 	golang.org/x/oauth2 v0.21.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/sys v0.21.0 // indirect
+	golang.org/x/sys v0.25.0 // indirect
 	golang.org/x/term v0.21.0 // indirect
 	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
 	golang.org/x/tools v0.22.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/apiextensions-apiserver v0.31.0 // indirect
-	k8s.io/component-base v0.31.0 // indirect
+	k8s.io/apiextensions-apiserver v0.31.1 // indirect
+	k8s.io/cli-runtime v0.31.1 // indirect
+	k8s.io/component-base v0.31.1 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect
 	k8s.io/kube-openapi v0.0.0-20240521193020-835d969ad83a // indirect
-	k8s.io/pod-security-admission v0.28.4 // indirect
+	k8s.io/kubectl v0.31.1 // indirect
+	k8s.io/pod-security-admission v0.31.1 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/kustomize/api v0.17.2 // indirect
+	sigs.k8s.io/kustomize/kyaml v0.17.1 // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
 	sigs.k8s.io/yaml v1.4.0 // indirect
 )
+
+replace github.com/karampok/metallb/e2etest => /home/kka/workspace/github.com/metallb/wts/metallb-e2e-unnumber-bfd