Inaccurate pipeline show information

[tatry]

1. nikss-ctl shows TC hook type for XDP-based pipeline.
2. In XDP-based pipeline has always egress program (TBC with compiler code).
3. Some object are shown which should be hidden in output JSON.
   To avoid this in the future maybe we should hide all names starting from ebpf_ and use this prefix in the generated programs by p4c compiler? As far I remember this prefix is reserved for such usage.

Output from PTF test upf.UPFTest:
Configuration:

Using test params: {'interfaces': 'psa_recirc,eth0,eth1,eth2,eth3,eth4,eth5', 'namespace': 'switch', 'trace': 'False', 'xdp': 'True', 'xdp2tc': 'meta'}
P4ARGS=--Wdisable=unused --max-ternary-masks 3 -DPORT0=4 -DPORT1=5 -DPORT2=6 -DPORT3=7 -DPORT4=8 -DPORT5=9 -DPSA_RECIRC=2 --xdp2tc=meta --xdp 

Pipeline show information:

{
    "pipeline": {
        "id": 1,
        "load_time": "2022-12-01T09:35:42+0100",
        "bpf_hook": "TC",
        "has_egress_program": false,
        "ports": [
            {
                "name": "eth0",
                "port_id": 4
            },
            {
                "name": "eth1",
                "port_id": 5
            },
            {
                "name": "eth2",
                "port_id": 6
            },
            {
                "name": "eth3",
                "port_id": 7
            },
            {
                "name": "eth4",
                "port_id": 8
            },
            {
                "name": "eth5",
                "port_id": 9
            }
        ],
        "objects": [
            "xdp2tc_shared_map",
            "ingress_upf_process_ingress_l4port_ingress_l4_src_port",
            "ingress_upf_process_ingress_l4port_ingress_l4_dst_port",
            "ingress_upf_ingress_source_interface_lookup_by_port",
            "ingress_upf_ingress_session_lookup_by_ue_ip",
            "ingress_upf_ingress_session_lookup_by_teid",
            "ingress_upf_ingress_pdr_lookup",
            "ingress_upf_ingress_far_lookup",
            "ingress_ip_forward_ipv4_lpm",
            "tx_port",
            "crc_lookup_tbl",
            "ingress_upf_process_ingress_l4port_ingress_l4port_fields"
        ]
    }
}