feat(iaas): min/max acc tests (#811)

* feat(iaas): security group min/max acc test

* feat(iaas): image min/max acc test

* feat(iaas): KeyPair min/max acc test

* feat(iaas): Network area min/max acc test
- fix: wrong atLeast-validator for `minimum_prefix_length`

* feat(iaas): Network min/max acc test

* feat(iaas): Volume min/max acc test
- fix: volume update doesn't work if no name was defined
- fix: volume.server_id can not be set
- fix: error message volume.size returns value but was null

* feat(iaas): Network interfaces min/max acc test

* feat(iaas): Affinity groups acc test

* feat(iaas): Server min/max acc test
- stackit_server_volume_attach
- stackit_server_network_interface_attach
- stackit_server_service_account_attach

* fix(iaas): acc test
- image: fix read of Config.VirtioScsi
- keypair: add missing RequiresReplace() for name
- server: add missing UserData read in datasource and resource

* feat(iaas): public ip acc test
- fix: when a nic is assigned to a public ip, the field network_interface_id leads to recreation

stackit/internal/services/iaas/testdata/resource-image-max.tf

@@ -0,0 +1,48 @@
+variable "project_id" {}
+variable "name" {}
+variable "disk_format" {}
+variable "local_file_path" {}
+variable "min_disk_size" {}
+variable "min_ram" {}
+variable "label" {}
+variable "boot_menu" {}
+variable "cdrom_bus" {}
+variable "disk_bus" {}
+variable "nic_model" {}
+variable "operating_system" {}
+variable "operating_system_distro" {}
+variable "operating_system_version" {}
+variable "rescue_bus" {}
+variable "rescue_device" {}
+variable "secure_boot" {}
+variable "uefi" {}
+variable "video_model" {}
+variable "virtio_scsi" {}
+
+resource "stackit_image" "image" {
+  project_id      = var.project_id
+  name            = var.name
+  disk_format     = var.disk_format
+  local_file_path = var.local_file_path
+  min_disk_size   = var.min_disk_size
+  min_ram         = var.min_ram
+  labels = {
+    "acc-test" : var.label
+  }
+  config = {
+    boot_menu                = var.boot_menu
+    cdrom_bus                = var.cdrom_bus
+    disk_bus                 = var.disk_bus
+    nic_model                = var.nic_model
+    operating_system         = var.operating_system
+    operating_system_distro  = var.operating_system_distro
+    operating_system_version = var.operating_system_version
+    rescue_bus               = var.rescue_bus
+    rescue_device            = var.rescue_device
+    secure_boot              = var.secure_boot
+    uefi                     = var.uefi
+    video_model              = var.video_model
+    virtio_scsi              = var.virtio_scsi
+  }
+
+}