Add config block tree

[angelnu]

This add config_block_tree that defines a config block including all its children. It can be used to import full config trees.

NOTE: it depends on the array support changed made by @thomasfinstad at https://github.com/thomasfinstad/vyos-client-go I could make it work without them but ideally we would merge his changes first.

[angelnu]

Examples from my homelab:

resource "vyos_config_block_tree" "dhcp_server" {
  path = "service dhcp-server shared-network-name LAN subnet 192.168.200.0/24"

  configs = {
    "default-router"= "192.168.200.1",
    "domain-name"= "vyos.net",
    "lease"= "86400",
    "name-server"= "192.168.200.1",
    "range foo start" = "192.168.200.9",
    "range foo stop"= "192.168.200.254"
  }
}

resource "vyos_config_block_tree" "interfaces" {
  path = "interfaces"
  configs = {
    "ethernet eth0 address"           = "dhcp"
    "ethernet eth0 description"       = "OUTSIDE"
    "ethernet eth0 vif 2 address"     = "dhcp"
    "ethernet eth0 vif 2 description" = "lte"
    "ethernet eth1 address"           = "192.168.200.1/24"
    "ethernet eth1 description"       = "INSIDE"
  }
}

The second one was a result of terraform import module.vyos.vyos_config_block_tree.interfaces "interfaces" just to test that I could import a complex tree.

[thomasfinstad]

This add config_block_tree that defines a config block including all its children. It can be used to import full config trees.

NOTE: it depends on the array support changed made by @thomasfinstad at https://github.com/thomasfinstad/vyos-client-go I could make it work without them but ideally we would merge his changes first.

I have not done any real testing of my code there, and might try to merge the map and array functions together at some point, but if @Foltik wish to pull it in that is fine with me.

[foltik]

Looks good to me, thanks for the contribution! Going to test this on my end and merge shortly.

[angelnu]

Great @Foltik - please notice that I made a change to support empty values -> https://github.com/thomasfinstad/vyos-client-go/pull/1