Bug#880888: maven-enforcer FTBFS with libmaven-dependency-tree-java 3.0.1-1

[Markus Koschany]

So apparently in libmaven-dependency-tree-java 3.0.1-1 the devs decided
to rename the word tree to graph...There were some other issues though
and I was not sure how to proceed. I had a look at the Fedora package
and they patched maven-enforcer to work with Maven 3 but they also added
a dependency on maven-transfer-artifact. Maybe it might help to resolve
this bug.

https://src.fedoraproject.org/cgit/rpms/maven-enforcer.git/tree/0001-Port-to-Maven-3-API.patch