[dev] Change local versions to +slapos004

See merge request nexedi/slapos.buildout!33

- Fixup "Use pip install --editable in easy_install.develop"

setup.py

@@ -12,7 +12,7 @@
 #
 ##############################################################################
 name = "zc.buildout"
-version = '3.0.1+slapos003'
+version = '3.0.1+slapos004'
 
 import os
 from setuptools import setup

zc.recipe.egg_/setup.py

@@ -14,7 +14,7 @@
 """Setup for zc.recipe.egg package
 """
 
-version = '2.0.8.dev0+slapos003'
+version = '2.0.8.dev0+slapos004'
 
 import os
 from setuptools import setup, find_packages