Add rubocop to our build. (#5004)

lib/backup_restore/backup_restore.rb

@@ -11,11 +11,11 @@ module BackupRestore
   METADATA_FILE = "meta.json"
   LOGS_CHANNEL = "/admin/backups/logs"
 
-  def self.backup!(user_id, opts={})
+  def self.backup!(user_id, opts = {})
     start! BackupRestore::Backuper.new(user_id, opts)
   end
 
-  def self.restore!(user_id, opts={})
+  def self.restore!(user_id, opts = {})
     start! BackupRestore::Restorer.new(user_id, opts)
   end
 

lib/backup_restore/backuper.rb

@@ -3,7 +3,7 @@ module BackupRestore
   class Backuper
     attr_reader :success
 
-    def initialize(user_id, opts={})
+    def initialize(user_id, opts = {})
       @user_id = user_id
       @client_id = opts[:client_id]
       @publish_to_message_bus = opts[:publish_to_message_bus] || false

lib/backup_restore/restorer.rb

@@ -8,7 +8,7 @@ module BackupRestore
   class Restorer
     attr_reader :success
 
-    def initialize(user_id, opts={})
+    def initialize(user_id, opts = {})
       @user_id = user_id
       @client_id = opts[:client_id]
       @filename = opts[:filename]