Fix warnings for ufw examples

lib/ansible/modules/system/ufw.py

@@ -149,7 +149,7 @@
 
 - name: Set logging
   ufw:
-    logging: on
+    logging: 'on'
 
 # Sometimes it is desirable to let the sender know when traffic is
 # being denied, rather than simply ignoring it. In these cases, use
@@ -185,7 +185,7 @@
 - name: Deny all access to port 53
   ufw:
     rule: deny
-    port: 53
+    port: '53'
 
 - name: Allow port range 60000-61000
   ufw:
@@ -196,7 +196,7 @@
 - name: Allow all access to tcp port 80
   ufw:
     rule: allow
-    port: 80
+    port: '80'
     proto: tcp
 
 - name: Allow all access from RFC1918 networks to this host
@@ -213,7 +213,7 @@
     rule: deny
     proto: udp
     src: 1.2.3.4
-    port: 514
+    port: '514'
     comment: Block syslog
 
 - name: Allow incoming access to eth0 from 1.2.3.5 port 5469 to 1.2.3.4 port 5469
@@ -223,24 +223,24 @@
     direction: in
     proto: udp
     src: 1.2.3.5
-    from_port: 5469
+    from_port: '5469'
     dest: 1.2.3.4
-    to_port: 5469
+    to_port: '5469'
 
 # Note that IPv6 must be enabled in /etc/default/ufw for IPv6 firewalling to work.
 - name: Deny all traffic from the IPv6 2001:db8::/32 to tcp port 25 on this host
   ufw:
     rule: deny
     proto: tcp
     src: 2001:db8::/32
-    port: 25
+    port: '25'
 
 - name: Deny all IPv6 traffic to tcp port 20 on this host
   # this should be the first IPv6 rule
   ufw:
     rule: deny
     proto: tcp
-    port: 20
+    port: '20'
     to_ip: "::"
     insert: 0
     insert_relative_to: first-ipv6
@@ -254,7 +254,7 @@
   ufw:
     rule: deny
     proto: tcp
-    port: 20
+    port: '20'
     to_ip: "::"
     insert: -1
     insert_relative_to: last-ipv4