new maven plugin jobs to build and deploy maven plugins to maven nexus
new maven plugin jobs to build and deploy maven plugins to maven nexus

This patch adds jobs to build maven plugins and deploy them
to the maven nexus repo at https://oss.sonatype.org

Closes-Bug: #1082812

Change-Id: I283d475ab18819391f282234b063522abbf09eda

open-switch/infra_puppet-jenkins,open-switch/infra_puppet-jenkins