Add S4U2Proxy delegation permissions on upgrades

https://fedorahosted.org/freeipa/ticket/2396

install/updates/30-s4u2proxy.update

@@ -16,3 +16,9 @@ default: objectClass: groupOfPrincipals
 default: objectClass: top
 default: cn: ipa-ldap-delegation-targets
 default: memberPrincipal: ldap/$FQDN@$REALM
+
+dn: cn=ipa-http-delegation,cn=s4u2proxy,cn=etc,$SUFFIX
+add: memberPrincipal: HTTP/$FQDN@$REALM
+
+dn: cn=ipa-ldap-delegation-targets,cn=s4u2proxy,cn=etc,$SUFFIX
+add: memberPrincipal: ldap/$FQDN@$REALM