CP-49724 Implement xenserver_network provider resource

[acefei]

source .env && TF_ACC=1 go test ./xenserver/ -v   -timeout 120m
=== RUN   TestAccNetworkResource
--- PASS: TestAccNetworkResource (54.00s)
=== RUN   TestAccPifDataSource
--- PASS: TestAccPifDataSource (20.26s)
=== RUN   TestAccSRDataSource
--- PASS: TestAccSRDataSource (18.06s)
=== RUN   TestAccVMResource
--- PASS: TestAccVMResource (57.10s)
PASS
ok      terraform-provider-xenserver/xenserver  149.444s

$make apply
...
Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the
following symbols:
  + create

Terraform will perform the following actions:

  # xenserver_network.network will be created
  + resource "xenserver_network" "network" {
      + id               = (known after apply)
      + name_label       = "Network of VM"
      + other_config     = {}
        # (1 unchanged attribute hidden)
    }

  # xenserver_vm.vm will be created
  + resource "xenserver_vm" "vm" {
      + id            = (known after apply)
      + name_label    = "Test CentOS VM"
      + other_config  = {
          + "flag" = "1"
        }
      + snapshots     = (known after apply)
      + template_name = "CentOS 7"
    }

Plan: 2 to add, 0 to change, 0 to destroy.

Changes to Outputs:
  + network_out  = (known after apply)
  + pif_data_out = {
      + device     = "eth0"
      + management = true
      + network    = "d9e981a6-7251-8794-7bbd-acb8662b9633"
    }
  + vm_out       = {
      + id            = (known after apply)
      + name_label    = "Test CentOS VM"
      + other_config  = {
          + flag = "1"
        }
      + snapshots     = (known after apply)
      + template_name = "CentOS 7"
    }
xenserver_vm.vm: Creating...
xenserver_network.network: Creating...
xenserver_network.network: Creation complete after 2s [id=504d2d5b-ca73-01a4-3735-69522e16995b]
xenserver_vm.vm: Creation complete after 2s [id=1913bddd-c718-246b-057a-4137328c11cc]

Apply complete! Resources: 2 added, 0 changed, 0 destroyed.

Outputs:

network_out = "504d2d5b-ca73-01a4-3735-69522e16995b"
pif_data_out = {
  "device" = "eth0"
  "management" = true
  "network" = "d9e981a6-7251-8794-7bbd-acb8662b9633"
}
vm_out = {
  "id" = "1913bddd-c718-246b-057a-4137328c11cc"
  "name_label" = "Test CentOS VM"
  "other_config" = tomap({
    "flag" = "1"
  })
  "snapshots" = tolist([])
  "template_name" = "CentOS 7"
}

$make import resource=xenserver_network.network id=504d2d5b-ca73-01a4-3735-69522e16995b
xenserver_network.network: Importing from ID "504d2d5b-ca73-01a4-3735-69522e16995b"...
data.xenserver_pif.pif_data: Reading...
xenserver_network.network: Import prepared!
  Prepared xenserver_network for import
xenserver_network.network: Refreshing state... [id=504d2d5b-ca73-01a4-3735-69522e16995b]
data.xenserver_pif.pif_data: Read complete after 0s

Import successful!

The resources that were imported are shown above. These resources are now in
your Terraform state and will henceforth be managed by Terraform.

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the
following symbols:
  + create
  ~ update in-place

Terraform will perform the following actions:

  # xenserver_network.network will be updated in-place
  ~ resource "xenserver_network" "network" {
        id               = "504d2d5b-ca73-01a4-3735-69522e16995b"
      ~ name_label       = "Network of VM" -> "Network of VM 1"
        # (2 unchanged attributes hidden)
    }

  # xenserver_vm.vm will be created
  + resource "xenserver_vm" "vm" {
      + id            = (known after apply)
      + name_label    = "Test CentOS VM"
      + other_config  = {
          + "flag" = "1"
        }
      + snapshots     = (known after apply)
      + template_name = "CentOS 7"
    }

Plan: 1 to add, 1 to change, 0 to destroy.

Changes to Outputs:
  + vm_out       = {
      + id            = (known after apply)
      + name_label    = "Test CentOS VM"
      + other_config  = {
          + flag = "1"
        }
      + snapshots     = (known after apply)
      + template_name = "CentOS 7"
    }
xenserver_vm.vm: Creating...
xenserver_network.network: Modifying... [id=504d2d5b-ca73-01a4-3735-69522e16995b]
xenserver_network.network: Modifications complete after 2s [id=504d2d5b-ca73-01a4-3735-69522e16995b]
xenserver_vm.vm: Creation complete after 2s [id=1bc08df5-4233-c1df-851c-d7bf7660a4c0]

Apply complete! Resources: 1 added, 1 changed, 0 destroyed.

Outputs:

network_out = "504d2d5b-ca73-01a4-3735-69522e16995b"
pif_data_out = {
  "device" = "eth0"
  "management" = true
  "network" = "d9e981a6-7251-8794-7bbd-acb8662b9633"
}
vm_out = {
  "id" = "1bc08df5-4233-c1df-851c-d7bf7660a4c0"
  "name_label" = "Test CentOS VM"
  "other_config" = tomap({
    "flag" = "1"
  })
  "snapshots" = tolist([])
  "template_name" = "CentOS 7"
}