kola: add KubeVirt platform support

Add a new "kubevirt" platform to kola for testing CoreOS on KubeVirt VMs.
This enables end-to-end testing of afterburn's KubeVirt metadata provider,
supporting both ConfigDrive and NoCloud cloud-init types.

Platform implementation:
- API wrapper using controller-runtime client + kubevirt.io/api types
  (lightweight alternative to kubevirt.io/client-go)
- SSH access via WebSocket port-forward through the KubeVirt API server
  (no virtctl binary dependency)
- containerDisk support for FCOS images (cosa already builds these)
- Per-test CloudInitType and NetworkData via MachineOptions

External test framework:
- Detect network_data.json in test dir -> ConfigDrive cloud-init type
- Detect network-config in test dir -> NoCloud cloud-init type
- File naming follows real-world conventions (OpenStack / cloud-init)
- Error if both files present in the same test directory
- Silently ignored on platforms that don't support network data

New CLI flags:
  --kubevirt-kubeconfig, --kubevirt-namespace, --kubevirt-image,
  --kubevirt-cloud-init-type, --kubevirt-memory, --kubevirt-cpus

New tests:
  fcos.metadata.kubevirt.configdrive
  fcos.metadata.kubevirt.nocloud

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Enrique Llorente <ellorent@redhat.com>

Author: qinqon

go.mod

@@ -38,6 +38,7 @@ require (
 	github.com/google/uuid v1.6.0
 	github.com/gophercloud/gophercloud v1.14.1
 	github.com/gophercloud/utils v0.0.0-20231010081019-80377eca5d56
+	github.com/gorilla/websocket v1.5.4-0.20250319132907-e064f32e3674
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/kylelemons/godebug v1.1.0
 	github.com/pborman/uuid v1.2.1
@@ -56,6 +57,11 @@ require (
 	google.golang.org/api v0.272.0
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
+	k8s.io/api v0.35.3
+	k8s.io/apimachinery v0.35.3
+	k8s.io/client-go v0.35.3
+	kubevirt.io/api v1.8.0
+	sigs.k8s.io/controller-runtime v0.23.3
 )
 
 require (
@@ -85,18 +91,25 @@ require (
 	github.com/coreos/go-json v0.0.0-20231102161613-e49c8866685a // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/digitalocean/go-libvirt v0.0.0-20250317183548-13bf9b43b50b // indirect
+	github.com/emicklei/go-restful/v3 v3.12.2 // indirect
+	github.com/evanphx/json-patch/v5 v5.9.11 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.11 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/errors v0.22.4 // indirect
+	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonreference v0.21.0 // indirect
 	github.com/go-openapi/strfmt v0.25.0 // indirect
+	github.com/go-openapi/swag v0.23.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/go-playground/validator/v10 v10.28.0 // indirect
 	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
 	github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
+	github.com/google/gnostic-models v0.7.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.14 // indirect
@@ -106,18 +119,23 @@ require (
 	github.com/hashicorp/go-uuid v1.0.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/openshift/custom-resource-status v1.1.2 // indirect
 	github.com/opentracing/opentracing-go v1.2.1-0.20220228012449-10b1cf09e00b // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
 	github.com/stretchr/testify v1.11.1 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	go.mongodb.org/mongo-driver v1.17.6 // indirect
@@ -127,14 +145,25 @@ require (
 	go.opentelemetry.io/otel/metric v1.39.0 // indirect
 	go.opentelemetry.io/otel/trace v1.39.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/net v0.52.0 // indirect
 	golang.org/x/sys v0.42.0 // indirect
 	golang.org/x/text v0.35.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260311181403-84a4fc48630c // indirect
 	google.golang.org/grpc v1.79.2 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
+	k8s.io/apiextensions-apiserver v0.35.0 // indirect
+	k8s.io/klog/v2 v2.130.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 // indirect
+	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 // indirect
+	kubevirt.io/containerized-data-importer-api v1.64.0 // indirect
+	kubevirt.io/controller-lifecycle-operator-sdk/api v0.2.4 // indirect
+	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
+	sigs.k8s.io/randfill v1.0.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482 // indirect
 	sigs.k8s.io/yaml v1.6.0 // indirect
 )