(HI-289) expand Hiera basic functionality acceptance tests

(HI-289) expand basic functionality acceptance tests  
three tests added:
  lookup_data_no_options - tests a simple priority lookup of a string from
    CLI
  default_value_if_key_not_found tests - that default value is used when
    key not found from CLI
  check_first_backend_hierarchy_first - tests multiple backends to ensure
    each hierarchy is checked in order as in the config file

(HI-289) expand basic functionality tests to work in windows and
solaris11.
make tests more atomic and remove 00-setup.rb
Because this is defined as a 'step' it will not be executed if a previous 'step' fails. Teardown actions should be wrapped in a 'teardown' block.

Example

    teardown do
      agents.each do |a|
        on(a, "rm -rf #{datadir})
      end
    end