EE: Enable Style/RedundantException, Lint/EmptyWhen, and RSpec/ExpectActual cops

EE version of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9151

@rspeicher

spec/features/issues/filtered_search/filter_issues_weight_spec.rb:59:14: C: RSpec/ExpectActual: Provide the actual you are testing to expect(...)
      expect(true).to be(false)
             ^^^^
spec/features/issues/filtered_search/filter_issues_weight_spec.rb:64:14: C: RSpec/ExpectActual: Provide the actual you are testing to expect(...)
      expect(true).to be(false)
             ^^^^

added 3 commits

• e2c4d427 - Enable the RSpec/ExpectActual cop and correct offenses
• 629526e9 - Enable Style/RedundantException cop and correct offense
• 15765e02 - Enable Lint/EmptyWhen cop and correct offense

Compare with previous version

assigned to @rymai

enabled an automatic merge when the pipeline for 15765e02 succeeds

merged