Allow 'pinniped get kubeconfig' to override the client-go credential …

…plugin command

cmd/pinniped/cmd/kubeconfig.go

@@ -97,6 +97,7 @@ type getKubeconfigParams struct {
 	credentialCachePath       string
 	credentialCachePathSet    bool
 	installHint               string
+	commandExePath            string
 }
 
 type discoveryResponseScopesSupported struct {
@@ -152,6 +153,7 @@ func kubeconfigCommand(deps kubeconfigDeps) *cobra.Command {
 	f.StringVarP(&flags.outputPath, "output", "o", "", "Output file path (default: stdout)")
 	f.StringVar(&flags.generatedNameSuffix, "generated-name-suffix", "-pinniped", "Suffix to append to generated cluster, context, user kubeconfig entries")
 	f.StringVar(&flags.credentialCachePath, "credential-cache", "", "Path to cluster-specific credentials cache")
+	f.StringVar(&flags.commandExePath, "command-exe-path", "", "Path to use as the command for the client-go credential plugin, usually the pinniped CLI")
 	f.StringVar(&flags.installHint, "install-hint", "The pinniped CLI does not appear to be installed.  See https://get.pinniped.dev/cli for more details", "This text is shown to the user when the pinniped CLI is not installed.")
 	mustMarkHidden(cmd, "oidc-debug-session-cache")
 
@@ -270,6 +272,9 @@ func newExecConfig(deps kubeconfigDeps, flags getKubeconfigParams) (*clientcmdap
 	execConfig.InstallHint = flags.installHint
 	var err error
 	execConfig.Command, err = func() (string, error) {
+		if flags.commandExePath != "" {
+			return flags.commandExePath, nil
+		}
 		command, err := deps.getPathToSelf()
 		return filepath.Base(command), err
 	}()

cmd/pinniped/cmd/kubeconfig_test.go

@@ -124,6 +124,7 @@ func TestGetKubeconfig(t *testing.T) {
 				  kubeconfig [flags]
 
 				Flags:
+				      --command-exe-path string                  Path to use as the command for the client-go credential plugin, usually the pinniped CLI
 				      --concierge-api-group-suffix string        Concierge API group suffix (default "pinniped.dev")
 				      --concierge-authenticator-name string      Concierge authenticator name (default: autodiscover)
 				      --concierge-authenticator-type string      Concierge authenticator type (e.g., 'webhook', 'jwt') (default: autodiscover)
@@ -1585,7 +1586,6 @@ func TestGetKubeconfig(t *testing.T) {
 			},
 		},
 		{
-
 			name: "autodetect nothing, set a bunch of options",
 			args: func(issuerCABundle string, issuerURL string) []string {
 				f := testutil.WriteStringToTempFile(t, "testca-*.pem", issuerCABundle)
@@ -1609,6 +1609,7 @@ func TestGetKubeconfig(t *testing.T) {
 					"--skip-validation",
 					"--generated-name-suffix", "-sso",
 					"--credential-cache", "/path/to/cache/dir/credentials.yaml",
+					"--command-exe-path", "/some/path/to/command-exe",
 				}
 			},
 			conciergeObjects: func(issuerCABundle string, issuerURL string) []runtime.Object {
@@ -1660,7 +1661,7 @@ func TestGetKubeconfig(t *testing.T) {
 						  - --session-cache=/path/to/cache/dir/sessions.yaml
 						  - --debug-session-cache
 						  - --request-audience=test-audience
-						  command: pinniped
+						  command: /some/path/to/command-exe
 						  env: []
 						  installHint: The pinniped CLI does not appear to be installed.  See https://get.pinniped.dev/cli
 						    for more details