[pkg] Run test suite as part of autopkgtest
Add support for autopkgtest. The test “unittest” will run the test
suite using pytest. As we need PostgreSQL in the test environment
and open network connection, the test is marked with
`isolation-container` and requires at least LXC to be run, e.g:
autopkgtest -s -- lxc -s autopkgtest-sid
[MASTER]
load-plugins=cubicweb.pylintext
ignore=__pkginfo__
[MESSAGES CONTROL]
disable = too-many-ancestors,too-many-instance-attributes,too-many-public-methods,
too-few-public-methods,too-many-arguments,import-error
[BASIC]
function-rgx = [a-z_][a-z0-9_]{2,35}$
good-names=w,_
[TYPECHECK]
generated-members=debug,info,notice,warning,error,critical,exception
[CLASSES]
exclude-protected=_cw,_cnx,
# namedtuple public API.
_asdict,_fields,_replace,_source,_make
[FORMAT]
max-line-length=100
max-module-lines=2000