* Build the HTTPS server on top of HTTP instead of the other way around
* Set the fetch service to nil after it has been cleaned up
* Don't capitalize the H in the word handler
* Check if the fetch_service is truthy before cleaning it up
* Remove the unused FetchServerName datastore option
* Fixup the description text
* Don't allow slashes in fetch file names
* Also add the #fetch_bindnetloc method
Fix a problem in fetch/tftp.rb
The size requriement is used when the adapted payload is executed from
the command line but that's not the case for the fetch payloads which
execute a command to fetch the payload from a URL. The payload size
doesn't matter because it's included in the executable file hosted at
the URL.