Merge branch 'change-es-index-name' into 'master'

Remove seconds from the ES index name format

See merge request gitlab-org/gitlab!32829

ee/lib/gitlab/elastic/helper.rb

@@ -36,7 +36,7 @@ module Gitlab
         settings = {}
         mappings = {}
 
-        new_index_name = with_alias ? "#{target_name}-#{Time.now.strftime("%Y%m%d-%H%M%S")}" : target_name
+        new_index_name = with_alias ? "#{target_name}-#{Time.now.strftime("%Y%m%d-%H%M")}" : target_name
 
         [
           Project,