remove error text in lib rspecs

- fix stderr message from generating a v2_key when file exists
- removed rspec deprecation warning

DEPRECATION: any_number_of_times is deprecated. Use stub instead. Called from /Users/kbrock/src/manageiq/lib/spec/openstack/openstack_handle/handle_spec.rb:52:in `block (3 levels) in <top (required)>'.