Remove duplicated owner key in test

rspec was throwing a warning about the duplicated owner key.

Change-Id: Ifa856605e646fe712c6f8c56312f1a01fa3aab7b

spec/classes/keystone_init_spec.rb

@@ -811,13 +811,11 @@ describe 'keystone' do
       it { is_expected.to contain_file('/etc/keystone/credential-keys/0').with(
         'content'   => 't-WdduhORSqoyAykuqWAQSYjg2rSRuJYySgI2xh48CI=',
         'owner'     => 'keystone',
-        'owner'     => 'keystone',
         'subscribe' => 'Anchor[keystone::install::end]',
       )}
       it { is_expected.to contain_file('/etc/keystone/credential-keys/1').with(
         'content'   => 'GLlnyygEVJP4-H2OMwClXn3sdSQUZsM5F194139Unv8=',
         'owner'     => 'keystone',
-        'owner'     => 'keystone',
         'subscribe' => 'Anchor[keystone::install::end]',
       )}
     end