[Review] Request from 'greygoo' @ 'SUSE/machinery/review_140731_dont_cut_error_messages'

Please review the following changes:
  * 32a5f11 Changed Cheetah exceptions to show all standard error output.
  * d7c7488 Fix RSpec deprecation warnings about old "stub" syntax
  * cd882cc Get rid of global RemoteSystem#connect stub
  * a78bea2 Fix "analyze -o config-file-diffs" on SLES12 systems