Fix broken feature spec.

This older spec was failing: features/project/issues/issues.feature

Looks like before we were doing an exact match for queries, that's why
it was passing with this existing issue: 59fa031e6f/features/project/issues/issues.feature (L128)

Failed build: https://gitlab.com/gitlab-org/gitlab-ce/builds/3178231

features/steps/project/issues/issues.rb

@@ -299,7 +299,7 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
   end
 
   step 'I fill in issue search with \'Rock and roll\'' do
-    filter_issue 'Description for issue'
+    filter_issue 'Rock and roll'
   end
 
   step 'I should see \'Bugfix1\' in issues' do