destcidrlist isn't supported for cloudstack_egress_firewall

[artem-sidorenko]

Example usage

resource "cloudstack_egress_firewall" "default" {
  network_id = "6eb22f91-7454-4107-89f4-36afcdf33021"

  rule {
    cidr_list = ["10.0.0.0/8"]
    protocol  = "tcp"
    ports     = ["80", "1000-2000"]
  }
}

If I check the cmk output, there is also destcidrlist:

$ cmk
(localcloud) 🐱 > list egressfirewallrules listall=true domainid=DOMAINID projectid=PROJECTID
{
  "count": 3,
  "firewallrule": [
    {
      "cidrlist": "10.100.0.0/24",
      "destcidrlist": "",                           # <------------
      "endport": 443,
      "fordisplay": true,
      "id": "RULEID",
      "networkid": "NETWORKID",
      "protocol": "tcp",
      "startport": 443,
      "state": "Active",
      "tags": [],
      "traffictype": "Egress"
    },
...
  ]
}

This makes somehow little sense, usually I want to specify the target for egress communication

[elivlo]

This should be related to #265