Update Gemfile dependencies
Update Gemfile dependencies

Starting with varia_model 0.5.0, the minimum supported Ruby version
is >= 2.0, but we test on 1.9.3 as shipped with older Chef versions.

Constrain ridley and faraday to 4.2.0 and 0.9.1, respectively.

Rearrange constrains and use < Chef 12.5

caskdata/hadoop_cookbook,cdapio/hadoop_cookbook,cdapio/hadoop_cookbook,cdapio/hadoop_cookbook,caskdata/hadoop_cookbook,caskdata/hadoop_cookbook