feat(fail2ban): cleanup unused jails and add nginx-unified config

fail2ban/data/fail2ban/jail.d/nginx-unified.conf

@@ -0,0 +1,34 @@
+[nginx-limit-req]
+enabled = true
+port    = http,https
+filter  = nginx-limit-req
+logpath = /var/log/nginx/*.error.log
+maxretry = 1
+
+[nginx-badbots]
+enabled  = true
+port     = http,https
+filter   = apache-badbots
+logpath  = /var/log/nginx/*.access.log
+maxretry = 2
+
+[nginx-deny]
+enabled = true
+port    = http,https
+filter  = nginx-deny
+logpath = /var/log/nginx/*.error.log
+maxretry = 1
+
+[nginx-unauthorized]
+enabled = true
+port    = http,https
+filter  = nginx-unauthorized
+logpath = /var/log/nginx/*.access.log
+maxretry = 3
+
+[nginx-bad-request]
+enabled = true
+port    = http,https
+filter  = nginx-bad-request
+logpath = /var/log/nginx/*.error.log
+maxretry = 1