(maint) Make the 'database' host available in 3.2 answers gen

Because answers gen does not have access to normal beaker context, the
special hosts need to be made available explicitly.
(maint) Add test for the 3.2 upgrade answers generation
Merge pull request #134 from branan/fix_32_answers_gen

(maint) Make the 'database' host available in 3.2 answers gen