Fix unit tests which will fail in 2020

TestSQLRepositoryQuery#testQueryACL is running NXQL queries which begin to fail at the end of 2019 because it searches for documents whose permissions will expire before 2020/01/01 : the test grants a permission for 5 days, so the permission will still be valid on January 1st, 2020

End date in the test should be pushed to 2100