Revert "component/proftpd: use slapos.cookbook:userinfo"

This reverts commit d1452403.

component/proftpd/buildout.cfg

@@ -4,8 +4,12 @@ extends =
   ../openssl/buildout.cfg
   ../zlib/buildout.cfg
 
-[proftpd-userinfo]
-recipe = slapos.cookbook:userinfo
+[proftpd-environment]
+recipe = collective.recipe.environment
+# This component depends on https://nexedi.erp5.net/bug_module/20180402-716ACB/ being fixed
+
+[proftpd-grp]
+recipe = collective.recipe.grp
 
 [proftpd]
 recipe = slapos.recipe.cmmi
@@ -20,8 +24,8 @@ configure-options =
 environment = 
   CPPFLAGS=-I${zlib:location}/include -I${openssl:location}/include
   LDFLAGS=-L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib -L${openssl:location}/lib -Wl,-rpath=${openssl:location}/lib
-  install_user=${proftpd-userinfo:pw-name}
-  install_group=${proftpd-userinfo:gr-name}
+  install_user=${proftpd-environment:USER}
+  install_group=${proftpd-grp:GROUP}
 
 
 [ftpasswd]