nixos/tests/oncall: Fix LDAP mapping (#408503)

Changed files
+1 -1
nixos
tests
web-apps
+1 -1
nixos/tests/web-apps/oncall.nix
···
username = "uid";
full_name = "cn";
email = "mail";
-
mobile = "telephoneNumber";
+
call = "telephoneNumber";
sms = "mobile";
};
};