feat: allow renaming a volume (#683)

##### SUMMARY
Allow renaming volume
Fixes #681 

##### ISSUE TYPE
- Feature Pull Request

##### COMPONENT NAME
`volume`

---------

Co-authored-by: Jonas L. <jooola@users.noreply.github.com>

changelogs/fragments/rename-volume.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - volume - Allow renaming a volume.

plugins/modules/volume.py

@@ -245,10 +245,20 @@ class AnsibleHCloudVolume(AnsibleHCloud):
                         action.wait_until_finished()
                     self._mark_as_changed()
 
+            update_params = {}
+
+            name = self.module.params.get("name")
+            if name is not None and name != self.hcloud_volume.name:
+                self.module.fail_on_missing_params(required_params=["id"])
+                update_params["name"] = name
+
             labels = self.module.params.get("labels")
             if labels is not None and labels != self.hcloud_volume.labels:
+                update_params["labels"] = labels
+
+            if update_params:
                 if not self.module.check_mode:
-                    self.hcloud_volume.update(labels=labels)
+                    self.hcloud_volume.update(**update_params)
                 self._mark_as_changed()
 
             delete_protection = self.module.params.get("delete_protection")

tests/integration/targets/volume/tasks/test.yml

@@ -122,6 +122,28 @@
     that:
       - volume is not changed
 
+- name: test update Volume name
+  hetzner.hcloud.volume:
+    id: "{{ volume.hcloud_volume.id }}"
+    name: "{{ hcloud_volume_name }}-new"
+  register: result
+- name: verify test update Volume name
+  assert:
+    that:
+      - result is changed
+      - result.hcloud_volume.name == hcloud_volume_name + '-new'
+
+- name: reset volume name
+  hetzner.hcloud.volume:
+    id: "{{ volume.hcloud_volume.id }}"
+    name: "{{ hcloud_server_name }}"
+  register: result
+- name: verify reset volume name
+  assert:
+    that:
+      - result is changed
+      - result.hcloud_volume.name == hcloud_volume_name
+
 - name: test increase Volume size
   hetzner.hcloud.volume:
     name: "{{hcloud_volume_name}}"