Replace assert_no_match

The assert_no_match method in Beaker was long deprecated then eventually
removed altogether in voxpupuli/beaker@6282311

This commit updates assert_no_match to refute_match.

Author: mhashizume

spec/acceptance/tests/resource/cron/should_only_fail_associated_resources_on_file_read_error_spec.rb

@@ -100,7 +100,7 @@
       end
 
       step 'Verify that Puppet does not fail a Cron resource associated with a readable crontab file' do
-        assert_no_match(%r{Cron.*first_entry}, puppet_result.stderr, 'Puppet fails a Cron resource associated with a readable crontab file')
+        refute_match(%r{Cron.*first_entry}, puppet_result.stderr, 'Puppet fails a Cron resource associated with a readable crontab file')
       end
 
       step 'Verify that Puppet successfully evaluates a Cron resource associated with a readable crontab file' do