refactor keys controller

ee/app/controllers/ee/profiles/keys_controller.rb

+module EE
+  module Admin
+    module ApplicationsController
+      protected
+
+      def redirect_to_profile_key_path
+        raise NotImplementedError unless defined?(super)
+
+        log_audit_event
+
+        super
+      end
+
+      private
+
+      def log_audit_event
+        AuditEventService.new(current_user,
+                              current_user,
+                              action: :custom,
+                              custom_message: 'Added SSH key',
+                              ip_address: request.remote_ip)
+            .for_user(@key.title).security_event
+      end
+    end
+  end
+end