(PE-14271) Adjust BeakerAnswers call for meep

Based on changes pending in puppetlabs/beaker-answers#16, change the
generate_installer_conf_file_for() method to submit the expected :format
option temporarily.  This will go away when we cutover to meep and no
longer have to have both installer scripts operational in the same
build.

Fleshes out the specs that verify the method returns expected answer or
pe.conf data from BeakerAnswers, as written out via scp.

lib/beaker-pe/install/pe_utils.rb

@@ -550,10 +550,12 @@ def prepare_host_installer_options(host)
         # @param [Hash] opts The Beaker options hash
         # @return [BeakerAnswers::Answers] the generated answers object
         def generate_installer_conf_file_for(host, hosts, opts)
-           answers = BeakerAnswers::Answers.create(opts[:pe_ver] || host['pe_ver'], hosts, opts)
-           configuration = answers.answer_string(host)
-           create_remote_file(host, host['pe_installer_conf_file'], configuration)
-           answers
+          format = host['pe_installer_type'] == 'meep' ? :hiera : :bash
+          beaker_opts = opts.merge(:format => format )
+          answers = BeakerAnswers::Answers.create(opts[:pe_ver] || host['pe_ver'], hosts, beaker_opts)
+          configuration = answers.installer_configuration_string(host)
+          create_remote_file(host, host['pe_installer_conf_file'], configuration)
+          answers
         end
 
         # Builds the agent_only and not_agent_only arrays needed for installation.

spec/beaker-pe/install/pe_utils_spec.rb

@@ -324,8 +324,30 @@ def slice_installer_options(host)
   end
 
   describe 'generate_installer_conf_file_for' do
-    it 'generates a legacy answer file if host["pe_installer_type"]=="legacy"'
-    it 'generates a meep config file if host["pe_installer_type"]=="meep"'
+    let(:master) { hosts.first }
+
+    it 'generates a legacy answer file if host["pe_installer_type"]=="legacy"' do
+      master['pe_installer_conf_file'] = '/tmp/answers'
+      master['pe_installer_type'] = 'legacy'
+      expect(subject).to receive(:create_remote_file).with(
+        master,
+        '/tmp/answers',
+        %r{q_install=y.*q_puppetmaster_certname=#{master}}m
+      )
+      subject.generate_installer_conf_file_for(master, hosts, opts)
+    end
+
+    it 'generates a meep config file if host["pe_installer_type"]=="meep"' do
+      master['pe_installer_conf_file'] = '/tmp/pe.conf'
+      master['pe_installer_type'] = 'meep'
+      master['pe_ver'] = '2016.2.0'
+      expect(subject).to receive(:create_remote_file).with(
+        master,
+        '/tmp/pe.conf',
+        %r{\{.*"puppet_enterprise::puppet_master_host": "#{master}"}m
+      )
+      subject.generate_installer_conf_file_for(master, hosts, opts)
+    end
   end
 
   describe 'fetch_pe' do