Set the certmonger subject with a string, not an object
ipa-server-certinstall goes through a slightly different code path
if the replacement certificate is issued by IPA. This was setting
the subject using cert.subject which is a Name object and not the
string representation of that object. This was failing in the
dbus call to certmonger.
https://pagure.io/freeipa/issue/8204
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>