use proper name for gitlabshell worker

app/observers/key_observer.rb

@@ -2,7 +2,7 @@ class KeyObserver < ActiveRecord::Observer
   include Gitolited
   def after_save(key)
-    GitoliteWorker.perform_async(
+    GitlabShellWorker.perform_async(
       :add_key,
       key.shell_id,
       key.key
@@ -10,7 +10,7 @@ class KeyObserver < ActiveRecord::Observer
   end
   def after_destroy(key)
-    GitoliteWorker.perform_async(
+    GitlabShellWorker.perform_async(
       :remove_key,
       key.shell_id,
       key.key,

app/observers/project_observer.rb

 class ProjectObserver < ActiveRecord::Observer
   def after_create(project)
-    GitoliteWorker.perform_async(
+    GitlabShellWorker.perform_async(
       :add_repository,
       project.path_with_namespace
     )
@@ -13,7 +13,7 @@ class ProjectObserver < ActiveRecord::Observer
   end
   def after_destroy(project)
-    GitoliteWorker.perform_async(
+    GitlabShellWorker.perform_async(
       :remove_repository,
       project.path_with_namespace
     )

app/workers/gitlab_shell_worker.rb

-class GitoliteWorker
+class GitlabShellWorker
   include Sidekiq::Worker
   include Gitolited