feat(kubernetes/shell): kubectl web shell and kubeconfig functionality EE-448 (#5229)

* feat(kubernetes/shell): backport kubectl shell backend functionality EE-849 (#5168)

* backported core backend kubectl shell functionality

* - backported kubectl shell unit tests
- backported k8s cli interface update
- backported k8s client library fake patch

* refactored backend to match EE

* fixed test error typo

* GetServiceAccountName -> GetServiceAccount - making the function reusable in multiple contexts

* feat(kubernetes/shell): backport kubeconfig generation backend functionality EE-1004 (#5213)

* backported core backend kubectl shell functionality

* refactored backend to match EE

* - backported kubernetes backend handler implementation
- backported kubernetes config endpoint
- backported kubeconfig file generation
- backported kubeconfig and yaml unit tests
- backported updates to kubeclient interfaces

* feat(app): kubectl shell ui backport EE-927 (#5221)

* Kubectl UI backport to CE

* fix authentication redirect issue

* comment out redirect function

* fix shell full width & change name of shell

* disable button when terminal connected

* fixed whitespace changes for css

* fixed whitespace changes for html

* linting fixes

Co-authored-by: zees-dev <dev.786zshan@gmail.com>

* feat(kubernetes/shell): backport of kubeconfig export functionality EE-926 (#5228)

* EE backport of kubeconfig UI functionality

* using angularjs constant instead of hardcoded URL

* updated portainer kubectl shell image

* fix kubectl button position issue in ce

* fix pod keep running when switching page

* feat(app): Kubectl shell ui EE-833 EE-1099 (#5271)

* fix kubectl shell css

* fix mini css issue

* fix tech issue for ui changes from review

* delete unuse file

* - refactored variable names
- restored content-wrapper scroll
- created object to store wrapper css

Co-authored-by: zees-dev <dev.786zshan@gmail.com>

* addressing PR issues

* fix required changes from tech reviews (#5319)

* fix required changes from tech reviews

* remove unuse css variable

* component refactor accoridng to PR and style guidelines

Co-authored-by: zees-dev <dev.786zshan@gmail.com>

* removed redundant dockerhub api endpoint variable

* - autoHeight -> terminal-window
- removed redundant try-catch
- saving config.yaml file as config

* fix(kube/shell): show error on failure

* fixed default https bug

* resolved merge conflicts

Co-authored-by: Richard Wei <54336863+WaysonWei@users.noreply.github.com>
Co-authored-by: richard <richard@richards-iMac-Pro.local>
Co-authored-by: Chaim Lev-Ari <chiptus@gmail.com>

api/kubernetes/cli/resource_test.go

@@ -0,0 +1,93 @@
+package cli
+
+import (
+	"strings"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	clientV1 "k8s.io/client-go/tools/clientcmd/api/v1"
+)
+
+// compareYAMLStrings will compare 2 strings by stripping tabs, newlines and whitespaces from both strings
+func compareYAMLStrings(in1, in2 string) int {
+	r := strings.NewReplacer("\t", "", "\n", "", " ", "")
+	in1 = r.Replace(in1)
+	in2 = r.Replace(in2)
+	return strings.Compare(in1, in2)
+}
+
+func Test_GenerateYAML(t *testing.T) {
+	resourceYAMLTests := []struct {
+		title    string
+		resource runtime.Object
+		wantYAML string
+	}{
+		{
+			title: "Config",
+			resource: &clientV1.Config{
+				APIVersion:     "v1",
+				Kind:           "Config",
+				CurrentContext: "portainer-ctx",
+				Contexts: []clientV1.NamedContext{
+					{
+						Name: "portainer-ctx",
+						Context: clientV1.Context{
+							AuthInfo: "test-user",
+							Cluster:  "portainer-cluster",
+						},
+					},
+				},
+				Clusters: []clientV1.NamedCluster{
+					{
+						Name: "portainer-cluster",
+						Cluster: clientV1.Cluster{
+							Server:                "localhost",
+							InsecureSkipTLSVerify: true,
+						},
+					},
+				},
+				AuthInfos: []clientV1.NamedAuthInfo{
+					{
+						Name: "test-user",
+						AuthInfo: clientV1.AuthInfo{
+							Token: "test-token",
+						},
+					},
+				},
+			},
+			wantYAML: `
+			apiVersion: v1
+			clusters:
+			- cluster:
+					insecure-skip-tls-verify: true
+					server: localhost
+				name: portainer-cluster
+			contexts:
+			- context:
+					cluster: portainer-cluster
+					user: test-user
+				name: portainer-ctx
+			current-context: portainer-ctx
+			kind: Config
+			preferences: {}
+			users:
+			- name: test-user
+				user:
+					token: test-token
+			`,
+		},
+	}
+
+	for _, ryt := range resourceYAMLTests {
+		t.Run(ryt.title, func(t *testing.T) {
+			yaml, err := GenerateYAML(ryt.resource)
+			if err != nil {
+				t.Errorf("generateYamlConfig failed; err=%s", err)
+			}
+
+			if compareYAMLStrings(yaml, ryt.wantYAML) != 0 {
+				t.Errorf("generateYamlConfig failed;\ngot=\n%s\nwant=\n%s", yaml, ryt.wantYAML)
+			}
+		})
+	}
+}