[ci] Make feature test more flexible

This test started to fail constantly because of having multiple whitespaces
instead of one in the view.
The corresponding view includes a newline within the presented string
which caused the text to fail.

src/api/spec/features/webui/packages_spec.rb

@@ -152,7 +152,7 @@
     request = BsRequest.where(description: 'Hey, why not?', creator: user.login, state: 'review')
     expect(request).to exist
     expect(page.current_path).to match("/request/show/#{request.first.number}")
-    expect(page).to have_text("Created by #{user.login}")
+    expect(page).to have_text(/Created by\s+#{user.login}/)
     expect(page).to have_text('In state review')
     expect(page).to have_text("Set the devel project to package #{third_project.name} / develpackage for package #{user.home_project} / develpackage")
   end