Fix Gitlab::BlobHelper load dependencies for elastic_repo_indexer

bin/elastic_repo_indexer

@@ -7,12 +7,15 @@ require 'active_model'
 require 'active_support'
 require 'active_support/core_ext'
 require 'benchmark'
+require 'charlock_holmes'
 
+$: << File.expand_path('../lib', __dir__)
 $: << File.expand_path('../ee/lib', __dir__)
 
 require 'open3'
 require 'rugged'
 
+require 'gitlab/blob_helper'
 require 'gitlab/elastic/client'
 require 'elasticsearch/model'
 require 'elasticsearch/git'