Update _3gpp-ns-nrm-networkslice.yang

    uses subnet3gpp:SubNetworkGrp;   // Inherits from SubNetwork

    leaf operationalState {

      description "The operational state of the network slice instance. 

        It describes whether or not the resource is physically installed 

        and working.";

      config false;

      type types3gpp:OperationalState;

    }

    leaf administrativeState {

      description "The administrative state of the network slice instance. 

        It describes the permission to use or prohibition against 

        using the instance, imposed through the OAM services.";

      type types3gpp:AdministrativeState;

    }

    list serviceProfileList {

      description "A list of service profiles supported by the network 

        slice instance.";