fail2ban_bantime variable added with a default on 1 day

defaults/main.yml

 ---
+# Default time to ban IP addresses for
+fail2ban_bantime: 86400
 # Array of IP addresses and / or subnets
 fail2ban_whitelist:
   - "127.0.0.1"

templates/jail.local.j2

@@ -5,7 +5,7 @@
 ignoreip  = {% for ip in fail2ban_whitelist %}{{ ip }}{% if not loop.last %} {% endif %}{% endfor %}
 {% endif %}
 
-bantime   = 86400
+bantime   = {{ fail2ban_bantime | default("86400") }}
 banaction = iptables-multiport
 logpath   = /var/log/auth.log