feat: allow forcing the deletion of firewalls that are still in use (#447)

##### SUMMARY

  - Do not silence 'firewall still in use' deletions errors.
  - Allow forcing the deletion of a firewall that is still in use.

Fixes #380

##### ISSUE TYPE

- Feature Pull Request


##### COMPONENT NAME

firewall

tests/integration/targets/firewall/defaults/main/main.yml

@@ -2,3 +2,4 @@
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 ---
 hcloud_firewall_name: "{{ hcloud_ns }}"
+hcloud_server_name: "{{ hcloud_ns }}"

tests/integration/targets/firewall/tasks/cleanup.yml

@@ -1,4 +1,9 @@
 ---
+- name: Cleanup test_server
+  hetzner.hcloud.server:
+    name: "{{ hcloud_server_name }}"
+    state: absent
+
 - name: Cleanup test_firewall
   hetzner.hcloud.firewall:
     name: "{{ hcloud_firewall_name }}"

tests/integration/targets/firewall/tasks/prepare.yml

@@ -0,0 +1,8 @@
+---
+- name: Create test_server
+  hetzner.hcloud.server:
+    name: "{{ hcloud_server_name }}"
+    server_type: cx11
+    image: ubuntu-22.04
+    state: stopped
+  register: test_server

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

@@ -69,6 +69,12 @@
     that:
       - result is not changed
 
+- name: Assign firewall to test_server
+  hetzner.hcloud.firewall_resource:
+    firewall: "{{ hcloud_firewall_name }}"
+    servers: ["{{ test_server.hcloud_server.name }}"]
+    state: present
+
 - name: Test update
   hetzner.hcloud.firewall:
     name: "{{ hcloud_firewall_name }}"
@@ -150,7 +156,7 @@
   ansible.builtin.assert:
     that:
       - result is changed
-      - result.hcloud_firewall.name == "changed-{{ hcloud_firewall_name }}"
+      - result.hcloud_firewall.name == "changed-" + hcloud_firewall_name
 
 - name: Test update name and labels
   hetzner.hcloud.firewall:
@@ -171,8 +177,21 @@
   hetzner.hcloud.firewall:
     name: "{{ hcloud_firewall_name }}"
     state: absent
+  ignore_errors: true
   register: result
 - name: Verify delete
+  ansible.builtin.assert:
+    that:
+      - result is failed
+      - '"is still in use" in result.msg'
+
+- name: Test delete with force
+  hetzner.hcloud.firewall:
+    name: "{{ hcloud_firewall_name }}"
+    force: true
+    state: absent
+  register: result
+- name: Verify delete with force
   ansible.builtin.assert:
     that:
       - result is changed