[test] give a non-ambiguous order to sync_schema assertion (closes #3001959)
Sorting by ordernum alone is unstable since several values have the
same ordernum.
ordernum + name should be stable.
Document: cubicweb-doc
Title: CubicWeb documentation
Author: Logilab
Abstract: Some base documentation for CubicWeb users and developpers
Section: Apps/Programming
Format: HTML
Index: /usr/share/doc/cubicweb-documentation/index.html
Files: /usr/share/doc/cubicweb-documentation/*.html