Conditionally add HTTPS inbound allow firewall rule

[strarsis]

This PR lets the firewall rule to allow inbound HTTPS to be added conditionally.
Only when at least one site uses HTTPS, the firewall rule for allowing inbound HTTPS is added.

[strarsis]

Edit: Using the delete attribute as this allows toggling and proper clean up of file when HTTPS firewall allow rule is not needed (in subsequent provisions), it also allows for much simpler configuration code.
The not inverts the fact that SSL is used, as it is used with delete which does the opposite of enabling the rule.

[swalkinshaw]

Thanks @strarsis