Can't resolve maven-checkstyle-plugin el7 for vdsm-jsonrpc

This patch [1] adds maven-checkstyle plugin for project vdsm-jsonrpc but it keep complaining [2] it can't resolve it . The plugin is the same version, 2.9.1 as ovirt engine uses. The F24 build is passing. What am I missing here? [1] https://gerrit.ovirt.org/67990 [2] http://jenkins.ovirt.org/job/vdsm-jsonrpc-java_master_check-patch-el7-x86_64...