Use http to download from git

Because https prompts buildout process, use http instead

slapos/software.cfg

@@ -190,7 +190,7 @@ repository_id_list = erp5
 recipe = plone.recipe.command
 location = ${buildout:parts-directory}/${:_buildout_section_name_}
 stop-on-error = true
-repository = https://git.erp5.org/repos/erp5.git
+repository = http://git.erp5.org/repos/erp5.git
 command = ${git:location}/bin/git clone --quiet ${:repository} ${:location}
 update-command = cd ${:location} && ${git:location}/bin/git pull --quiet