Exclude plugins dir from rubocop and codeclimate config

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

.codeclimate.yml

@@ -45,3 +45,4 @@ exclude_paths:
 - log/
 - backups/
 - coverage-javascript/
+- plugins/

.rubocop.yml

@@ -17,6 +17,7 @@ AllCops:
     - 'bin/**/*'
     - 'generator_templates/**/*'
     - 'builds/**/*'
+    - 'plugins/**/*'
   CacheRootDirectory: tmp
 
 # This cop checks whether some constant value isn't a