Do not build UML images by default
Do not build UML images by default

as pyreverse output changes even for the same input and then the
package is not reproducible.

juxor/dhcpcanon_debian,juga0/dhcpcanon,juga0/dhcpcanon,juxor/dhcpcanon_debian,DHCPAP/dhcpcanon,DHCPAP/dhcpcanon