Avoid raising an exception when the user to be added to an LDAP group

is already a member of it.

Signed-off-by: Birin Sanchez <birin.sanchez@puri.sm>
1 job for 346_add_existing_user_to_LDAP_group_crash in 38 seconds
Status Job ID Name Coverage
  Deb
passed #23740
liberty
deb

00:00:38