Attempt to see if specifying IP and port help

We see that the service is listening on 127.0.0.1:5432, so this failure
is weird.

Maybe looking for a specific IP address and protocol will help?

spec/acceptance/utf8_encoding_spec.rb

@@ -24,7 +24,7 @@ class { 'postgresql::server': }
     puts '-------------------------------'
     puts LitmusHelper.instance.run_shell('systemctl status postgresql*').stdout
     puts '-------------------------------'
-    expect(port(5432)).to be_listening
+    expect(port(5432)).to be_listening.on('127.0.0.1').with('tcp')
     expect(psql('--command="\l" postgres', 'postgres').stdout).to match(%r{List of databases})
     expect(psql('--command="SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname=\'template1\'"').stdout).to match(%r{UTF8})
   end