Update Release Candidate

component/zlib/buildout.cfg

@@ -5,5 +5,5 @@ parts =
 [zlib]
 recipe = slapos.recipe.cmmi
 shared = true
-url = http://downloads.sourceforge.net/project/libpng/zlib/1.2.11/zlib-1.2.11.tar.gz
-md5sum = 1c9f62f0778697a09d36121ead88e08e
+url = https://www.zlib.net/zlib-1.2.12.tar.gz
+md5sum = 5fc414a9726be31427b440b434d05f78

stack/slapos.cfg

@@ -132,7 +132,7 @@ eggs =
 [versions]
 setuptools = 44.1.1
 # Use SlapOS patched zc.buildout
-zc.buildout = 2.7.1+slapos017
+zc.buildout = 2.7.1+slapos018
 # Use SlapOS patched zc.recipe.egg (zc.recipe.egg 2.x is for Buildout 2)
 zc.recipe.egg = 2.0.3+slapos003
 
@@ -193,7 +193,7 @@ slapos.cookbook = 1.0.237
 slapos.core = 1.7.5
 slapos.extension.strip = 0.4
 slapos.extension.shared = 1.0
-slapos.libnetworkcache = 0.24
+slapos.libnetworkcache = 0.25
 slapos.rebootstrap = 4.5
 slapos.recipe.build = 0.54
 slapos.recipe.cmmi = 0.19
@@ -256,11 +256,6 @@ distro = 1.7.0
 Werkzeug = 1.0.1
 distro = 1.6.0
 
-# temporary revert the version up because of issues with python3
-[versions:python3]
-zc.buildout = 2.7.1+slapos016
-slapos.libnetworkcache = 0.22
-
 
 [networkcache]
 download-cache-url = http://shacache.nxdcdn.com