Updated Plugin Mechanism for kubectl is Graduating to Stable ([#579](https://github.com/kubernetes/enhancements/issues/579))

- Extends functionality to kubectl to support extensions adding new commands as well as overriding specific subcommands (at any depth).
- Documentation fixes
kubernetes/enhancements: [#579](https://github.com/kubernetes/enhancements/issues/579) [[kep](https://github.com/kubernetes/enhancements/blob/master/keps/sig-cli/0024-kubectl-plugins.md#summary)]

}

func operatorDumpCmd(rootArgs *RootArgs, odArgs *operatorDumpArgs) *cobra.Command {
	return &cobra.Command{
		Use:   "dump",
		Short: "Dumps the Istio operator controller manifest.",
		Long:  "The dump subcommand dumps the Istio operator controller manifest.",
		Args:  cobra.ExactArgs(0),
		PreRunE: func(cmd *cobra.Command, args []string) error {

}

func profileDiffCmd(pfArgs *profileDiffArgs) *cobra.Command {
	return &cobra.Command{
		Use:   "diff <profile|file1.yaml> <profile|file2.yaml>",
		Short: "Diffs two Istio configuration profiles",
		Long:  "The diff subcommand displays the differences between two Istio configuration profiles.",
		Example: `  # Profile diff by providing yaml files
  istioctl profile diff manifests/profiles/default.yaml manifests/profiles/demo.yaml

        }
    }

    private int informationLevel;

    Info info;

    Trans2QueryPathInformationResponse( int informationLevel ) {
        this.informationLevel = informationLevel;
        subCommand = SmbComTransaction.TRANS2_QUERY_PATH_INFORMATION;
    }

    int writeSetupWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeParametersWireFormat( byte[] dst, int dstIndex ) {

    private int informationLevel;

    AllocInfo info;

    Trans2QueryFSInformationResponse( int informationLevel ) {
        this.informationLevel = informationLevel;
        command = SMB_COM_TRANSACTION2;
        subCommand = SmbComTransaction.TRANS2_QUERY_FS_INFORMATION;
    }

    int writeSetupWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeParametersWireFormat( byte[] dst, int dstIndex ) {

    protected int dataOffset;
    protected int dataDisplacement;
    protected int setupCount;
    protected int bufParameterStart;
    protected int bufDataStart;

    int dataCount;
    byte subCommand;
    boolean hasMore = true;
    boolean isPrimary = true;
    byte[] txn_buf;

    /* for doNetEnum and doFindFirstNext */
    int status;
    int numEntries;
    FileEntry[] results;

                ",node=" + node + "]" );
        }
    }

    int pathConsumed;
    int numReferrals;
    int flags;
    Referral[] referrals;

    Trans2GetDfsReferralResponse() {
        subCommand = SmbComTransaction.TRANS2_GET_DFS_REFERRAL;
    }

    int writeSetupWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeParametersWireFormat( byte[] dst, int dstIndex ) {

	return &cobra.Command{
		Use:   "remove",
		Short: "Removes the Istio operator controller from the cluster.",
		Long:  "The remove subcommand removes the Istio operator controller from the cluster.",
		Args: func(cmd *cobra.Command, args []string) error {
			if orArgs.revision == "" && !orArgs.purge {

}

func manifestDiffCmd(diffArgs *manifestDiffArgs) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "diff <file|dir> <file|dir>",
		Short: "Compare manifests and generate diff",
		Long: "The diff subcommand compares manifests from two files or directories. The output is a list of\n" +
			"changed paths with the value changes shown as OLD-VALUE -> NEW-VALUE.\n" +

                    break;
                case ServerMessageBlock.SMB_COM_TRANSACTION:
                case ServerMessageBlock.SMB_COM_TRANSACTION2:
                    switch( ((SmbComTransaction)request).subCommand & 0xFF ) {
                        case SmbComTransaction.NET_SHARE_ENUM:
                        case SmbComTransaction.NET_SERVER_ENUM2:
                        case SmbComTransaction.NET_SERVER_ENUM3: