upgrade: provide DOMAIN to the server upgrade dictionary
Rules in ipa-rewrite.conf use $DOMAIN variable but it is not available
in the dictionary. Regression was introduced with
e731b2725a3772cd037683ff2e08c514fd02019f.
Fixes: https://pagure.io/freeipa/issue/8615
Related: https://pagure.io/freeipa/issue/8595
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>