adobe_flash_sps.rb - resource_uri vs get_resource

resource_uri will randomize the returned uri unless
datastore['URIPATH"] is set.

get_resource will return the currently used reosurce_uri

Since the incorrect type is used, this exploit is completely broken.

Tested fix with both URIPATH set to / and unset, and it works after
redirect.
Missing the file param that's needed to download the mp4
Land #1954 - Fix resource_uri and mp4 file path