remote-network4-set doesn't save some parameters

config parameters:

• rebind-timer
• renew-timer
• valid-lifetime
• reservation-mode

are not saved when remote-network4-set is used.

Scenario add network:

{
  "arguments": {
    "remote": {
      "type": "mysql"
    },
    "server-tags": [
      "abc"
    ],
    "shared-networks": [
      {
        "client-class": "abc",
        "interface": "enp0s9",
        "name": "net1",
        "option-data": [
          {
            "always-send": true,
            "code": 6,
            "csv-format": true,
            "data": "192.0.2.1"
          }
        ],
        "rebind-timer": 200,
        "renew-timer": 100,
        "reservation-mode": "global",
        "subnet4": [
          {
            "interface": "enp0s9",
            "pools": [
              {
                "pool": "192.8.0.1-192.8.0.1"
              }
            ],
            "subnet": "192.8.0.0/24"
          }
        ],
        "user-context": "some weird network",
        "valid-lifetime": 300
      }
    ]
  },
  "command": "remote-network4-set"
}

response:

{
  "arguments": {
    "shared-networks": [
      {
        "name": "net1"
      }
    ]
  },
  "result": 0,
  "text": "IPv4 shared network successfully set."
}

get network:

{
  "arguments": {
    "remote": {
      "type": "mysql"
    },
    "server-tags": [
      "abc"
    ],
    "shared-networks": [
      {
        "name": "net1"
      }
    ]
  },
  "command": "remote-network4-get"
}

returned configuration:

{
  "arguments": {
    "count": 1,
    "shared-networks": [
      {
        "authoritative": false,
        "client-class": "abc",
        "interface": "enp0s9",
        "match-client-id": true,
        "name": "net1",
        "option-data": [
          {
            "always-send": true,
            "code": 6,
            "csv-format": true,
            "data": "192.0.2.1",
            "name": "domain-name-servers",
            "space": "dhcp4"
          }
        ],
        "relay": {
          "ip-addresses": []
        },
        "reservation-mode": "all",
        "subnet4": [],
        "user-context": "some weird network"
      }
    ]
  },
  "result": 0,
  "text": "IPv4 shared network 'net1' found."
}

quick peak into database:

mysql> select * from dhcp4_shared_network;
+----+------+--------------+-----------+-----------------+---------------------+--------------+-------+-------------+------------------------+------------------+----------------------+----------------+
| id | name | client_class | interface | match_client_id | modification_ts     | rebind_timer | relay | renew_timer | require_client_classes | reservation_mode | user_context         | valid_lifetime |
+----+------+--------------+-----------+-----------------+---------------------+--------------+-------+-------------+------------------------+------------------+----------------------+----------------+
|  1 | net1 | abc          | enp0s9    |               1 | 2019-03-01 05:31:28 |         NULL | NULL  |        NULL | [  ]                   |                3 | "some weird network" |           NULL |
+----+------+--------------+-----------+-----------------+---------------------+--------------+-------+-------------+------------------------+------------------+----------------------+----------------+
1 row in set (0.00 sec)

...and values are indeed missing. Related: #508 (closed)