Add a method to pull/check the most current disa cci list

[aaronlippold]

Webpage for disa CCI is here - I think we will need to build in this process.

• in the data directory - we have an cci xml file we need to see if it is the most current
  ( we may just want to always pull the most current but want to cover the disconnected case )
• pull the disa web page
  ( perhaps print out a warning that we may or may not have the most current cci file )
• check the data on xml file or on the disa web page
• pull the zip file and get the most current xml file
• continue