Extend Instance table

from django.utils.translation import ugettext_lazy as _
from horizon import tables
from openstack_dashboard.dashboards.project.instances import tables as project_tables
from openstack_dashboard.dashboards.project.instances import views

class MyInstancesTable(project_tables.InstancesTable):
           pubname = tables.Column("pubname", verbose_name=_("Public name"))

views.IndexView.table_class = MyInstancesTable