[fix]Add mock munge key logic in compute setup recipe during kitchen …

…tests

Fix Kitchen tests on compute nodes caused by not existed Munge Key

Change the mocked munge key content to a correct binary as we do in the config and update logic

cookbooks/aws-parallelcluster-slurm/libraries/helpers.rb

@@ -101,6 +101,10 @@ def setup_munge_key(shared_dir)
 end
 
 def setup_munge_compute_node
+  if kitchen_test?
+    # FIXME: Mock munge key in shared directory.
+    include_recipe 'aws-parallelcluster-slurm::mock_munge_key'
+  end
   setup_munge_key(node['cluster']['shared_dir'])
   enable_munge_service
 end

cookbooks/aws-parallelcluster-slurm/recipes/test/mock_munge_key.rb

@@ -5,9 +5,16 @@
     mode '0700'
   end
 
-  file "#{munge_dir}/.munge.key" do
-    content 'munge-key'
-    owner node['cluster']['munge']['user']
-    group node['cluster']['munge']['group']
+  bash "mock_munge_key" do
+    user 'root'
+    group 'root'
+    code <<-MOCK_KEY
+      set -e
+      munge_directory=#{munge_dir}
+      encoded_key='lWXJDxgGhJxIVqLdbaycUICm12u0gHtcDFslGGxJlyLoVIQJFuskDfkK8wjvQfhT5pkeyuxA+vjgg9R+E+ftPVTsVLHaf4bx3RmEfe30bZo79Yg+GhTRJRzV401/VaTlVEGFwMcJhmVKrXX/MbfnIdMwWNgCL8swUELbFOI4CG0='
+      decoded_key=$(echo $encoded_key | base64 -d)
+      echo "${decoded_key}" > ${munge_directory}/.munge.key
+      chmod 0600 ${munge_directory}/.munge.key
+    MOCK_KEY
   end
 end