fixup! component/perl: Infrastructure for CPAN packages in inpendent parts

We should not use _profile_base_location_ in another section, because
slapos.recipe.cmmi only know how to ignore it in the cache key
computation when _profile_base_location_ is used directly in the
slapos.recipe.cmmi section.

component/perl/buildout.cfg

@@ -84,13 +84,10 @@ make-options =
 make-binary=
   PERL5LIB="${:inc}:${:install-inc}" make
 
-post-make-hook = ${perl-CPAN-post-make-hook:post-make-hook}
-perl_location = ${perl:location}
+# this post-make-hook is same for all users of the macro.
+post-make-hook = ${:_profile_base_location_}/../../component/perl/perl-CPAN-package-create-wrapper.py#f9314defc3b144d9f36f8cab2a013af9:post_make_hook
 
-[perl-CPAN-post-make-hook]
-# a separate section, because when using in macro, we want this
-# _profile_base_location_ to be relateive to perl/buildout.cfg
-post-make-hook = ${:_profile_base_location_}/perl-CPAN-package-create-wrapper.py#f9314defc3b144d9f36f8cab2a013af9:post_make_hook
+perl_location = ${perl:location}
 
 
 [perl-wrapper]