Fix site user addition and deletion

Signed-off-by: Thomas Citharel <tcit@tcit.fr>
2 jobs for fix-user-site-addition-deletion in 3 minutes and 54 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #107748
test_php7.0

00:03:54

passed #107749
test_php7.1

00:03:48