Worflow Templates do not have job_plays and raw_stdout_via_worker

Added a check in code to not try to show "Plays" section and load standard output for workflow template type services.

Fixes ManageIQ#4444

app/helpers/service_helper/textual_summary.rb

@@ -67,6 +67,7 @@ def textual_group_tower_job_credentials
 
   def textual_group_tower_job_plays
     return nil unless fetch_job
+    return nil unless @job.respond_to?(:job_plays)
     fetch_job_plays
   end
 

app/views/service/_svcs_show.html.haml

@@ -41,7 +41,7 @@
       - if @record.type == "ServiceAnsibleTower"
         = miq_tab_content("tower_job", 'default', :class => 'cm-tab') do
           = render :partial => "layouts/textual_groups_tabs", :locals => {:textual_group_list => textual_tower_job_group_list, :tab_id => "tower_job"}
-          - if job
+          - if job && job.respond_to?(:raw_stdout_via_worker)
             %ansible-raw-stdout#service_detail_ansible_tower_job{'task-id' => @record.job.raw_stdout_via_worker(nil, 'html')}
             :javascript
               miq_bootstrap('#service_detail_ansible_tower_job');