stack.logrotate: Factorise and move hashes out of buildout.cfg .

stack/logrotate/buildout.cfg

 [buildout]
 extends =
+  buildout.hash.cfg
   ../../component/dcron/buildout.cfg
   ../../component/gzip/buildout.cfg
   ../../component/logrotate/buildout.cfg
 parts =
   template-logrotate-base
 
-[logrotate-conf-template]
+[logrotate-download-base]
 recipe = slapos.recipe.build:download
-url = ${:_profile_base_location_}/logrotate.conf.in
-md5sum = 24f021a248f2802ee70857cf3d8832f2
+url = ${:_profile_base_location_}/${:filename}
 # XXX: following mode should be the default
 mode = 644
 
+[logrotate-conf-template]
+< = logrotate-download-base
+
 [logrotate-entry-template]
-recipe = slapos.recipe.build:download
-url = ${:_profile_base_location_}/logrotate_entry.in
-md5sum = 7a5ec8f141c61826a14db8619acba314
-# XXX: following mode should be the default
-mode = 644
+< = logrotate-download-base
 
 [template-logrotate-base]
 recipe = slapos.recipe.template:jinja2
-template = ${:_profile_base_location_}/${:filename}.in
-rendered = ${buildout:directory}/${:filename}
-filename = instance-logrotate-base.cfg
-md5sum = 3e3e572c5537f77e83b1ee157d1c9852
+template = ${:_profile_base_location_}/${:filename}
+rendered = ${buildout:directory}/instance-logrotate-base.cfg
 context =
     key dcron_location dcron:location
     key gzip_location gzip:location

stack/logrotate/buildout.hash.cfg

+# THIS IS NOT A BUILDOUT FILE, despite purposedly using a compatible syntax.
+# The only allowed lines here are (regexes):
+# - "^#" comments, copied verbatim
+# - "^[" section beginings, copied verbatim
+# - lines containing an "=" sign which must fit in the following categorie.
+#   - "^\s*filename\s*=\s*path\s*$" where "path" is relative to this file
+#     But avoid directories, they are not portable.
+#     Copied verbatim.
+#   - "^\s*hashtype\s*=.*" where "hashtype" is one of the values supported
+#     by the re-generation script.
+#     Re-generated.
+# - other lines are copied verbatim
+# Substitution (${...:...}), extension ([buildout] extends = ...) and
+# section inheritance (< = ...) are NOT supported (but you should really
+# not need these here).
+[logrotate-conf-template]
+filename = logrotate.conf.in
+md5sum = 67954c82a8030e5dcac3a8c5d115f624
+
+[logrotate-entry-template]
+filename = logrotate_entry.in
+md5sum = 7a5ec8f141c61826a14db8619acba314
+
+[template-logrotate-base]
+filename = instance-logrotate-base.cfg.in
+md5sum = 3e3e572c5537f77e83b1ee157d1c9852