Merge pull request #29 from toreanderson/master

Merge handling of rancid-fe from upstream branch, amongst other patches.
Add ucsrancid for Cisco UCS devices

This is a really quick'n'dirty adaptation of the original rancid script
meant for Cisco UCS devices. It dumps the output of the following
command with minimal post-processing:

  show version
  show chassis inventory expand detail
  show fabric-interconnect inventory expand detail
  show configuration