Allow providing metal-stack release version.

control-plane/roles/metal/README.md

@@ -94,6 +94,7 @@ You can look up all the default values of this role [here](defaults/main/main.ya
 | metal_api_s3_secret                 |           | The secret of the S3 server that serves firmwares                                              |
 | metal_api_s3_firmware_bucket        |           | The S3 bucket name that contains the firmwares                                                 |
 | metal_api_password_reason_minlength |           | If machine console password is requested this defines if and how long the given reason must be |
+| metal_api_release_version           |           | The release version of metal-stack                                                             |
 | minimum_client_version              |           | minimum metalctl version which is required to talk to this metal-api instance                  |
 
 ### masterdata-api

control-plane/roles/metal/defaults/main/main.yaml

@@ -60,6 +60,7 @@ metal_api_s3_key:
 metal_api_s3_secret:
 metal_api_s3_firmware_bucket:
 metal_api_password_reason_minlength:
+metal_api_release_version: "{{ metal_stack_release_version }}"
 minimum_client_version: "{{ metalctl_version }}"
 
 # masterdata-api

control-plane/roles/metal/templates/metal-values.j2

@@ -111,6 +111,7 @@ metal_api:
   view_key: "{{ metal_api_view_key }}"
   edit_key: "{{ metal_api_edit_key }}"
   admin_key: "{{ metal_api_admin_key }}"
+  release_version: "{{ metal_api_release_version }}"
   minimum_client_version: "{{ metalctl_version }}"
 {% if metal_api_password_reason_minlength %}
   password_reason_minlength: "{{ metal_api_password_reason_minlength }}"