Fix foodcritic

This MR fixes all foodcritic issues and removes some unused attributes at the same time. More specifically,

• support_email - The support email is not used anymore in gitlab.
• standard_signin_enabled - The sign enabled feature is already covered by the signin_enabled attribute.

attributes/default.rb

@@ -66,7 +66,6 @@ end
default['gitlab']['git_path'] = "/usr/local/bin/git"
default['gitlab']['host'] = "localhost"
default['gitlab']['email_from'] = "gitlab@localhost"
-default['gitlab']['support_email'] = "support@localhost"
default['gitlab']['max_size'] = "20971520" # 20.megabytes
default['gitlab']['git_timeout'] = 10
@@ -76,7 +75,6 @@ default['gitlab']['projects_limit'] = 10
default['gitlab']['user_can_create_group'] = true
default['gitlab']['user_can_change_username'] = true
default['gitlab']['default_theme'] = 2
-default['gitlab']['standard_signin_enabled'] = true
default['gitlab']['repository_downloads_path'] = "tmp/repositories"
default['gitlab']['oauth_enabled'] = false
default['gitlab']['oauth_block_auto_created_users'] = true