bios repo updated

[Michael_E_Brown at Dell.com]

All,
    After an absense of updates for roughly 6 months, I have put some attention to the BIOS repository. I have regenerated all of the BIOS RPMS from the current dell.com content as well as made various improvements to the scripting for people who wish to make their own repo.

Here is a summary of some of the changes:

  -- Regenerated BIOS repo
  -- blacklisted some relatively older systems with known-broken RBU implementations.
  -- split mirroring out of mkbiosrepo.sh
     -- switch to 'lftp' vs 'wget'
     -- changed mirroring policy to reduce unwanted content. Only mirror things that are likely to be BIOS updates (exclude .ISO, .TXT, others)
     -- used the --size-range option to lftp to only mirror things in the correct size range for a BIOS update
     -- the above changes reduce mirror size by several GB.

  -- regular scheduled updates to the repo. I have put in place an automated procedure so that I do not have to manually run the bios extraction every week.

  -- various improvements to the dell-repo-tools and firmware-tools scripts.

--
Michael