Restart Apache if onion service version configuration changes

If the configuration of v2 and v3 services is modified, Apache needs
to be restarted for the app config to reflect the changes, so that
migration warnings are accurate.

(cherry picked from commit 8183f15)

install_files/ansible-base/roles/app/tasks/copy_tor_url_info_to_app_dir.yml

@@ -23,12 +23,16 @@
     mode: "0644"
     content: |
       {{ v2_onion_url_lookup_result.stdout|default('') }}
+  notify:
+    - restart apache2
   when: v2_onion_services
 
 - name: Remove source v2 onion service info if not enabled
   file:
     path: /var/lib/securedrop/source_v2_url
     state: absent
+  notify:
+    - restart apache2
   when: not v2_onion_services
 
 - name: Expose source v3 onion service info to app
@@ -39,10 +43,14 @@
     mode: "0644"
     content: |
       {{ v3_onion_url_lookup_result.stdout|default('') }}
+  notify:
+    - restart apache2
   when: v3_onion_services
 
 - name: Remove source v3 onion service info if not enabled
   file:
     path: /var/lib/securedrop/source_v3_url
     state: absent
+  notify:
+    - restart apache2
   when: not v3_onion_services