[2.1-Build 40] Need to mask a data of REST API by each project

When a client gets Contrail data by Rest API, all of data can be seen and modified.
The data should be mask by each tenant.

For instance; apicheck user can get a network of demo user.

The credential:
{"auth":{"passwordCredentials":{"username": "apicheck", "password": "juniper123"},"tenantName": "apicheck"}}

http://172.27.113.85:8082/virtual-network/4eb4151f-07d1-4db6-a8cb-7c820a08158e
{
    "virtual-network": {
        "display_name": "VN2",
        "fq_name": [
            "default-domain",
            "demo",
            "VN2"
        ],
        "href": "http://172.27.113.85:8082/virtual-network/4eb4151f-07d1-4db6-a8cb-7c820a08158e",
        "id_perms": {
            "created": "2015-03-26T01:24:44.410360",
            "creator": null,
            "description": null,
            "enable": true,
            "last_modified": "2015-03-31T01:20:21.077330",
            "permissions": {
                "group": "admin",
                "group_access": 7,
                "other_access": 7,
                "owner": "admin",
                "owner_access": 7
            },
            "user_visible": true,
            "uuid": {
                "uuid_lslong": 12162952116600051086,
                "uuid_mslong": 5671181053785623990
            }
        },
        "is_shared": false,
        "name": "VN2",
        "network_ipam_refs": [
            {
                "attr": {
                    "ipam_subnets": [
                        {
                            "addr_from_start": true,
                            "allocation_pools": [],
                            "default_gateway": "50.0.0.1",
                            "dhcp_option_list": {
                                "dhcp_option": []
                            },
                            "dns_server_address": "50.0.0.2",
                            "enable_dhcp": true,
                            "host_routes": {
                                "route": []
                            },
                            "subnet": {
                                "ip_prefix": "50.0.0.0",
                                "ip_prefix_len": 24
                            },
                            "subnet_uuid": "03fa4411-4c89-49ec-98f6-6b8d746fed7d"
                        }
                    ]
                },
                "href": "http://172.27.113.85:8082/network-ipam/1723c3b6-6be2-4c90-ac5f-27e784bf444c",
                "to": [
                    "default-domain",
                    "default-project",
                    "default-network-ipam"
                ],
                "uuid": "1723c3b6-6be2-4c90-ac5f-27e784bf444c"
            }
        ],
        "parent_href": "http://172.27.113.85:8082/project/87096c40-210e-4502-a0f3-d077fb9364d1",
        "parent_type": "project",
        "parent_uuid": "87096c40-210e-4502-a0f3-d077fb9364d1",
        "route_target_list": {},
        "router_external": false,
        "routing_instances": [
            {
                "href": "http://172.27.113.85:8082/routing-instance/0b176ced-c347-4e14-a750-3d00837d415a",
                "to": [
                    "default-domain",
                    "demo",
                    "VN2",
                    "VN2"
                ],
                "uuid": "0b176ced-c347-4e14-a750-3d00837d415a"
            }
        ],
        "uuid": "4eb4151f-07d1-4db6-a8cb-7c820a08158e",
        "virtual_network_properties": {
            "allow_transit": false,
            "forwarding_mode": null,
            "network_id": 9,
            "rpf": null,
            "vxlan_network_identifier": null
        }
    }
}