Fix isolated spec test

Author: hgreebe

cookbooks/aws-parallelcluster-environment/test/controls/isolated_spec.rb

@@ -17,6 +17,6 @@
     its('owner') { should cmp 'root' }
     its('group') { should cmp 'root' }
     its('mode') { should cmp '0744' }
-    its('content') { should match /USERS=\(root #{node['cluster']['cluster_admin_user']} #{node['cluster']['cluster_user']}\)/ }
+    its('content') { should match /echo "Defaults env_keep += \\"AWS_DEFAULT_REGION AWS_CA_BUNDLE REQUESTS_CA_BUNDLE SSL_CERT_FILE\\"" > \/etc\/sudoers.d\/pcluster-aws-cli-envkeep/ }
   end
 end