This adds an angular version of the Load Balancers V2 panel,
including the Load Balancers table and config to get karma working.
The karma config assumes the horizon directory is a sibling of
neutron-lbaas-dashboard.
To use, copy the _1481_project_ng_loadbalancersv2_panel.py file from
neutron_lbaas_dashboard/enabled into openstack_dashboard/enabled.
Partially-Implements: blueprint horizon-lbaas-v2-ui
Change-Id: I99c4ec705433385c19256c887944706472642a25