roles: use longer format for when conditionals

When the condition is an AND we can use this more succinct format.

roles/common/tasks/fail2ban.yml

@@ -5,7 +5,9 @@
   notify: restart fail2ban
 
 - name: Configure fail2ban nginx filter
-  when: "extra_fail2ban_filters is defined and 'nginx' in extra_fail2ban_filters"
+  when:
+    - extra_fail2ban_filters is defined
+    - "'nginx' in extra_fail2ban_filters"
   ansible.builtin.template: src=etc/fail2ban/jail.d/nginx.local.j2 dest=/etc/fail2ban/jail.d/nginx.local owner=root mode=0644
   notify: restart fail2ban
 

roles/common/tasks/main.yml

@@ -40,7 +40,9 @@
   tags: sysctl
 
 - name: Reconfigure /etc/rc.local
-  when: ansible_distribution == 'Ubuntu' and ansible_distribution_version is version('19.04', '<=')
+  when:
+    - ansible_distribution == 'Ubuntu'
+    - ansible_distribution_version is version('19.04', '<=')
   ansible.builtin.template: src=rc.local_Ubuntu.j2 dest=/etc/rc.local owner=root group=root mode=0755
 
 - name: Set I/O scheduler