slapos-testing: Use explicitly the python provided by the buildout
convention: to develop cloudooo, one need to add cloudoo-develop and cloudoo in parts
erp5: develop erp5.utils from parts/erp5/
develop slapos.cookbook in erp5
Cloudooo: simplify develop eggs
version up : groonga-4.0.5 and mroonga-4.05.
version up : libtasn1 4.1.
version up : p11-kit 0.21.1.
update eggs.