Reorganise variable (Minor change)

software/erp5/instance.cfg

@@ -60,11 +60,12 @@ link_binary_list =
   ${poppler:location}/bin/pdftotext
   ${poppler:location}/bin/pdftohtml
 
-bt5_repository_list = ${bt5-repository:list}
-
 # XXX: products won't be needed as soon as all ERP5 (and products-deps)
 # products will be eggified so then it will be possible to use them thanks to
 # availability in software's eggs
 products = ${products:list}
 environment =
   LD_LIBRARY_PATH = ${file:location}/lib:${zlib:location}/lib:${freetype:location}/lib:${libXext:location}/lib:${libXau:location}/lib:${libX11:location}/lib:${libXdmcp:location}/lib:${libxcb:location}/lib
+
+bt5_repository_list = ${bt5-repository:list}
+