[server/test] make test filename uniques To avoid these pytest error when collecting the whole test suite: import file mismatch: imported module 'unittest_utils' has this __file__ attribute: cubicweb/cubicweb/server/test/unittest_utils.py which is not the same as the test file we want to collect: cubicweb/cubicweb/test/unittest_utils.py Move cubicweb/server/test/unittest_security.py to cubicweb/server/test/unittest_security.py and cubicweb/test/unittest_utils.py to cubicweb/test/unittest_server_utils.py

^build$
^dist$
\.egg-info$
^.tox$
^.cache$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
\.pybuild
cubicweb/server/test/data/slapd.conf
debian/python-cubicweb
debian/*.log
debian/*.substvars
debian/cubicweb-doc
debian/cubicweb
debian/files

syntax: regexp
.*/data.*/database/.*
.*/data/ldapdb/.*
.*/data/uicache/
.*/data/libpython/cubicweb_.*/i18n/.*\.po
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
^doc/_build
^doc/js_api/
test-results.xml
ve