Wrong data has been uplodaded to shacache.

Because "gets is a security hole - use fgets instead" and this function is not
available anymore in recent environments.

Also depend on patch change, as it shall lead to recompilation.

Because "gets is a security hole - use fgets instead" and this function is not
available anymore in recent environments.

Also depend on patch change, as it shall lead to recompilation.
(cherry picked from commit 70859841)

Pinning down slapos.cookbook 0.61.
There is conflict with slapos.recipe.template and slapos.cookbook which
also contain module named slapos.recipe.template

Possibly it will require a bit of rewrite, as it will be it will be impossible
to use buildout procedure to download the content.

(cherry picked from commit c40f1bf4)