Build succeeded in Jenkins: Maven TLP » maven-site-plugin » master #48

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See https://builds.apache.org/job/maven-box/job/maven-site-plugin/job/master/48/

Changes:

* H31 gives OOME (let's see if others are stable again...)
* MSITE-851 avoid IT failure with old JDK 7 caused by plexus-utils upgrade

All tests passed