deprecation warning fix: inerherit from RuboCop::Cop::Base instead of RuboCop::Cop::Cop

Author: nicowenterodt

test/fixture/extend_config/bananas.rb

@@ -1,7 +1,7 @@
 module RuboCop
   module Cop
     module Bananas
-      class BananasOnly < Cop
+      class BananasOnly < Base
         def on_lvasgn(node)
           name, = *node
 

test/fixture/extend_config/betterment.rb

@@ -1,7 +1,7 @@
 module RuboCop
   module Cop
     module Betterment
-      class UnscopedFind < Cop
+      class UnscopedFind < Base
       end
     end
   end

test/fixture/plugins/project/lib/banana/banana_bomb.rb

@@ -2,7 +2,7 @@
 module RuboCop
   module Cop
     module Bananas
-      class BananaBomb < Cop
+      class BananaBomb < Base
         def on_class(node)
           add_offense(node, message: "🍌💣 - Better ignore me!")
         end

test/fixture/plugins/project/lib/banana/bananas.rb

@@ -1,7 +1,7 @@
 module RuboCop
   module Cop
     module Bananas
-      class BananasOnly < Cop
+      class BananasOnly < Base
         def on_lvasgn(node)
           # cracks me up that we have to disable this cop inside itself
           name, = *node # standard:disable Bananas/BananasOnly

test/standard/plugin/merges_plugins_into_rubocop_config_test.rb

@@ -53,16 +53,16 @@ def rules(context)
 
   module RuboCop::Cop
     module Fake
-      class Things < RuboCop::Cop::Cop
+      class Things < RuboCop::Cop::Base
       end
 
-      class Stuff < RuboCop::Cop::Cop
+      class Stuff < RuboCop::Cop::Base
       end
 
-      class Junk < RuboCop::Cop::Cop
+      class Junk < RuboCop::Cop::Base
       end
 
-      class Crap < RuboCop::Cop::Cop
+      class Crap < RuboCop::Cop::Base
       end
     end
   end