Make specs pass on Ruby 2.2 and 2.3
Make specs pass on Ruby 2.2 and 2.3

2.3 changed the arguments error string

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

chef/knife-cloud,chef/knife-cloud,chef/knife-cloud