test(e2e): remove exec.Command calls (#53)

Switch from using exec.Command to using kind and docker as libraries, so
tests won't depend on external binaries.

Signed-off-by: Francesco Canovai <[email protected]>

Author: fcanovai

go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/cloudnative-pg/cnpg-i v0.0.0-20241109002750-8abd359df734
 	github.com/cloudnative-pg/cnpg-i-machinery v0.0.0-20241030141108-7e59fc9f4797
 	github.com/cloudnative-pg/machinery v0.0.0-20241105070525-042a028b767c
+	github.com/docker/docker v27.3.1+incompatible
 	github.com/onsi/ginkgo/v2 v2.21.0
 	github.com/onsi/gomega v1.35.1
 	github.com/spf13/cobra v1.8.1
@@ -23,11 +24,15 @@ require (
 	k8s.io/client-go v0.31.2
 	k8s.io/utils v0.0.0-20241104163129-6fe5fd82f078
 	sigs.k8s.io/controller-runtime v0.19.1
+	sigs.k8s.io/kind v0.25.0
 	sigs.k8s.io/kustomize/api v0.17.3
 	sigs.k8s.io/kustomize/kyaml v0.17.2
 )
 
 require (
+	github.com/BurntSushi/toml v1.4.0 // indirect
+	github.com/Microsoft/go-winio v0.4.14 // indirect
+	github.com/alessio/shellescape v1.4.2 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
@@ -36,7 +41,11 @@ require (
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/cloudnative-pg/api v0.0.0-20241004125129-98baa9f4957b // indirect
+	github.com/containerd/log v0.1.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.5.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
 	github.com/emicklei/go-restful/v3 v3.12.1 // indirect
 	github.com/evanphx/json-patch/v5 v5.9.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
@@ -58,11 +67,12 @@ require (
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/google/pprof v0.0.0-20241029153458-d1b30febd7db // indirect
+	github.com/google/safetext v0.0.0-20220905092116-b49f7bc46da2 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/websocket v1.5.1 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.1.0 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.23.0 // indirect
 	github.com/hashicorp/hcl v1.0.1-vault-5 // indirect
 	github.com/imdario/mergo v0.3.16 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
@@ -73,13 +83,19 @@ require (
 	github.com/lib/pq v1.10.9 // indirect
 	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/spdystream v0.4.0 // 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/morikuni/aec v1.0.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.0 // indirect
+	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.78.1 // indirect
@@ -101,33 +117,35 @@ require (
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/xlab/treeprint v1.2.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.54.0 // indirect
-	go.opentelemetry.io/otel v1.29.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect
+	go.opentelemetry.io/otel v1.32.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.32.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.27.0 // indirect
-	go.opentelemetry.io/otel/metric v1.29.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.28.0 // indirect
-	go.opentelemetry.io/otel/trace v1.29.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.32.0 // indirect
+	go.opentelemetry.io/otel/metric v1.32.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.32.0 // indirect
+	go.opentelemetry.io/otel/trace v1.32.0 // indirect
 	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
 	go.starlark.net v0.0.0-20240925182052-1207426daebd // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
 	golang.org/x/exp v0.0.0-20240909161429-701f63a606c0 // indirect
 	golang.org/x/net v0.30.0 // indirect
 	golang.org/x/oauth2 v0.23.0 // indirect
-	golang.org/x/sync v0.8.0 // indirect
-	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/sync v0.9.0 // indirect
+	golang.org/x/sys v0.27.0 // indirect
 	golang.org/x/term v0.25.0 // indirect
-	golang.org/x/text v0.19.0 // indirect
+	golang.org/x/text v0.20.0 // indirect
 	golang.org/x/time v0.7.0 // indirect
 	golang.org/x/tools v0.26.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20240903143218-8af14fe29dc1 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20241104194629-dd2ea8efbc28 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20241104194629-dd2ea8efbc28 // indirect
 	google.golang.org/protobuf v1.35.1 // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gotest.tools/v3 v3.5.1 // indirect
 	k8s.io/apiserver v0.31.2 // indirect
 	k8s.io/component-base v0.31.2 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect