LU-5306: Update download and other whamcloud URLs

We are updating *.whamcloud.com URLs to *.hpdd.intel.com URLs, as
well as downloads.lustre.org to downloads.hpdd.intel.com.

Signed-off-by: Joshua Kugler <joshua.kugler@intel.com>
Change-Id: I6ebd45f8bb1f905692ca992617805ef225e09849
Reviewed-on: http://review.whamcloud.com/11169


Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Peter Jones <peter.a.jones@intel.com>