Auto merge of #2070 - rubygems:prepare-to-release-rubygems272, r=hsbt

Prepare to release Rubygems 2.7.2

I added missing template for `bundle gem` with #2065

Author: bundlerbot

lib/rubygems.rb

@@ -10,7 +10,7 @@
 require 'thread'
 
 module Gem
-  VERSION = "2.7.1"
+  VERSION = "2.7.2"
 end
 
 # Must be first since it unloads the prelude from 1.9.2

lib/rubygems/commands/setup_command.rb

@@ -439,9 +439,19 @@ def rb_files_in dir
     end
   end
 
+  # for installation of bundler as default gems
   def template_files
     Dir.chdir "bundler/lib" do
-      Dir[File.join('bundler', 'templates', '**', '*')].select{|f| !File.directory?(f)}
+      (Dir[File.join('bundler', 'templates', '**', '*')] + Dir[File.join('bundler', 'templates', '**', '.*')]).
+        select{|f| !File.directory?(f)}
+    end
+  end
+
+  # for cleanup old bundler files
+  def template_files_in dir
+    Dir.chdir dir do
+      (Dir[File.join('templates', '**', '*')] + Dir[File.join('templates', '**', '.*')]).
+        select{|f| !File.directory?(f)}
     end
   end
 
@@ -482,10 +492,10 @@ def remove_old_lib_files lib_dir
     lib_dirs[File.join(lib_dir, 'bundler')] = 'bundler/lib/bundler' if Gem::USE_BUNDLER_FOR_GEMDEPS
     lib_dirs.each do |old_lib_dir, new_lib_dir|
       lib_files = rb_files_in(new_lib_dir)
-      lib_files.concat(template_files) if new_lib_dir =~ /bundler/
+      lib_files.concat(template_files_in(new_lib_dir)) if new_lib_dir =~ /bundler/
 
       old_lib_files = rb_files_in(old_lib_dir)
-      old_lib_files.concat(template_files) if old_lib_dir =~ /bundler/
+      old_lib_files.concat(template_files_in(old_lib_dir)) if old_lib_dir =~ /bundler/
 
       to_remove = old_lib_files - lib_files