Fix a false positive for RSpec/RepeatedExampleGroupBody when pending or skip have argument(s).

[Tietew]

RSpec/RepeatedExampleGroupBody does not register offenses when example group body is skip or pending.

describe 'alpha' do
  skip
end

describe 'bravo' do
  skip
end

But each of them has a same argument, registers offenses.

describe 'alpha' do
^^^^^^^^^^^^^^^^^^^ Repeated describe block body
  skip 'something needed'
end

describe 'bravo' do
^^^^^^^^^^^^^^^^^^^ Repeated describe block body
  skip 'something needed'
end

I thinks this is a false positive.
This PR allows this.

---

Before submitting the PR make sure the following are checked:

• Feature branch is up-to-date with master (if not - rebase it).
• Squashed related commits together.
• Added tests.
• Updated documentation.
• Added an entry to the CHANGELOG.md if the new code introduces user-observable changes.
• The build (bundle exec rake) passes (be sure to run this locally, since it may produce updated documentation that you will need to commit).

If you have created a new cop:

• Added the new cop to config/default.yml.
• The cop is configured as Enabled: pending in config/default.yml.
• The cop documents examples of good and bad code.
• The tests assert both that bad code is reported and that good code is not reported.
• Set VersionAdded in default/config.yml to the next minor version.

If you have modified an existing cop's configuration options:

• Set VersionChanged in config/default.yml to the next major version.

[pirj]

Thanks!

[pirj]

Now when I look at it, it seems that there's something wrong, and it's the repeated context title.
Do you mind to make them different?
The example with describe '#load' do isn't the best reference, it's a miss.

[Tietew]

I'll try update them to clarify use case.

[bquorning]

@pirj Are you happy with this PR as it is? (We can resolve the Changelog conflict on merge).

[pirj]

Thanks!