[pkg] Add python-logilab-constraint to debian dependencies else we may run into problem when pkg_resources is used, as it will detect that a dependancy in the python package isn't installed. Fix it this way rather than using extras_require because we want the package to be usable with a simple pip install. Closes #9343431

\.pyc$
build/
rql_solve.so$
\.pytest\.restart$
\.tox