The existing functionality for portgroups in the node-details/configuration
tab has been augmented with the capability to create portgroups. Clicking
on the menu button above the portgroup table will launch a modal dialog
that guides the user in entering the parameters required to create a
portgroup.
Change-Id: Ieef7fff4f29318ae74e11559dc69e6317c3c25d6
7dc721fd79