Layout/SpaceeAroundKeyword should allow super::ConstName

[ozydingo]

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---

Expected behavior

The Layout/SpaceAroundKeyword cop should allow code such as super::MyModule and super::MY_CONST.

A common example of this construct could be in Rails to dynamically refer to modules such as SomeActiveRecordClass::GeneratedAssociationMethods

My specific use case is simply a plain-ruby method that returns a module being overridden by subclasses to return a dynamically-generated child module:

def storage_class
  secure? ? super::Secure : super
end

Actual behavior

Layout/SpaceAroundKeyword: Space after keyword super is missing.

Steps to reproduce the problem

Run rubocop over a file with the following contents:

# this part is just for fun; option to skip if these are already defined :-)
module RuboCop
  module Cop
    module Layout
    end
  end
end

class C
  def mod
    return RuboCop::Cop
  end
end

class D < C
  def mod
    super::Layout
  end
end

RuboCop version

0.76.0 (using Parser 2.6.5.0, running on ruby 2.6.1 x86_64-darwin18)