Reuse LDAP adapter in Group instances

lib/gitlab/ldap/adapter.rb

@@ -63,7 +63,7 @@ module Gitlab
         options.merge!(size: size) if size
 
         ldap.search(options).map do |entry|
-          Gitlab::LDAP::Group.new(entry)
+          Gitlab::LDAP::Group.new(entry, self)
         end
       end
 

lib/gitlab/ldap/group.rb

@@ -12,9 +12,10 @@ module Gitlab
         adapter.group(cn)
       end
 
-      def initialize(entry)
+      def initialize(entry, adapter=nil)
         Rails.logger.debug { "Instantiating #{self.class.name} with LDIF:\n#{entry.to_ldif}" }
         @entry = entry
+        @adapter = adapter
       end
 
       def cn