[server] prevent returning closed cursor to the database pool In since c8c6ad8 init_repository use repo.internal_cnx() instead of repo.system_source.get_connection() so it use the pool and we should not close cursors from the pool before returning it back. Otherwise we may have "connection already closed" error. This bug only trigger when connection-pool-size = 1. Since we are moving to use a dynamic pooler we need to get this fixed. This does not occur with sqlite since the connection wrapper instantiate new cursor everytime, but this occur with other databases.

Tests: unittest
Depends:
 python3-cubicweb, cubicweb-ctl,
 @builddeps@,
 python3-pytest,
 python3-flake8,
 python3-psycopg2, postgresql, postgresql-plpython,
 python3-ldap3, slapd, ldap-utils
Restrictions: allow-stderr, isolation-container

Tests: skeleton-packaging
Depends:
 python3-cubicweb, cubicweb-ctl,
 python3-pyramid, python3-wsgicors,
 devscripts, equivs, lintian, autopkgtest
Restrictions: allow-stderr, needs-root