ipatests: use krb5_trace in TestIpaAdTrustInstall
tasks.create_active_user can fail in a subtle way when there
are two IPA servers due to replication delays.
Using the debug-enabled version of create_active_user helps
determine whether there is another underlying issue and, in
general, prevents the above problem.
Fixes: https://pagure.io/freeipa/issue/8944
Signed-off-by: François Cami <fcami@redhat.com>
Reviewed-By: Anuja More <amore@redhat.com>