fix validation error on services

app/models/project_services/emails_on_push_service.rb

@@ -2,7 +2,7 @@ class EmailsOnPushService < Service
   boolean_accessor :send_from_committer_email
   boolean_accessor :disable_diffs
   prop_accessor :recipients
-  validates :recipients, presence: true, if: :activated?
+  validates :recipients, presence: true, if: :activated?, unless: :importing?
 
   def title
     'Emails on push'

app/models/project_services/irker_service.rb

@@ -4,7 +4,7 @@ class IrkerService < Service
   prop_accessor :server_host, :server_port, :default_irc_uri
   prop_accessor :recipients, :channels
   boolean_accessor :colorize_messages
-  validates :recipients, presence: true, if: :activated?
+  validates :recipients, presence: true, if: :activated?, unless: :importing?
 
   before_validation :get_channels
 

app/models/project_services/pipelines_email_service.rb

 class PipelinesEmailService < Service
   prop_accessor :recipients
   boolean_accessor :notify_only_broken_pipelines
-  validates :recipients, presence: true, if: :activated?
+  validates :recipients, presence: true, if: :activated?, unless: :importing?
 
   def initialize_properties
     self.properties ||= { notify_only_broken_pipelines: true }

app/models/service.rb

@@ -2,6 +2,8 @@
 # and implement a set of methods
 class Service < ActiveRecord::Base
   include Sortable
+  include Importable
+
   serialize :properties, JSON # rubocop:disable Cop/ActiveRecordSerialize
 
   default_value_for :active, false

spec/lib/gitlab/import_export/project.json

@@ -7096,7 +7096,7 @@
       "project_id": 5,
       "created_at": "2016-06-14T15:01:51.232Z",
       "updated_at": "2016-06-14T15:01:51.232Z",
-      "active": false,
+      "active": true,
       "properties": {
 
       },