Description of problem:
Deploy with latest packstack version OSP-8 and enabled VPNaaS in answer file 
CONFIG_NEUTRON_VPNAAS=y
deploy succuessful but there is no VPN tab in horizon .
The reason is packstack didnt change in :
/usr/share/openstack-dashboard/openstack_dashboard/local/local_settings.py

this parameter to "TRUE" 
OPENSTACK_NEUTRON_NETWORK = {
    'enable_distributed_router': False,
    'enable_firewall': False,
    'enable_ha_router': False,
    'enable_lb': False,
    'enable_quotas': True,
    'enable_security_group': True,
    'enable_vpn': False  <----------- this parameter should be change to True  
    'profile_support': 'None',
}


Version-Release number of selected component (if applicable):
# rpm -qa |grep vpn
python-neutron-vpnaas-7.0.0-1.el7ost.noarch
openstack-neutron-vpnaas-7.0.0-1.el7ost.noarch
[root@rose12 ~(keystone_admin)]# rpm -qa |grep  packstack
openstack-packstack-7.0.0-0.8.dev1661.gaf13b7e.el7ost.noarch
openstack-packstack-puppet-7.0.0-0.8.dev1661.gaf13b7e.el7ost.noarch
[root@rose12 ~(keystone_admin)]# rpm -qa |grep  neutron
python-neutronclient-3.1.0-1.el7ost.noarch
python-neutron-7.0.1-2.el7ost.noarch
openstack-neutron-common-7.0.1-2.el7ost.noarch
openstack-neutron-7.0.1-2.el7ost.noarch
openstack-neutron-ml2-7.0.1-2.el7ost.noarch
openstack-neutron-openvswitch-7.0.1-2.el7ost.noarch
python-neutron-vpnaas-7.0.0-1.el7ost.noarch
openstack-neutron-vpnaas-7.0.0-1.el7ost.noarch


How reproducible:
always
Steps to Reproduce:
1.Install OSP-8 with packstack , set VPNAAS = y 
2.after installation finish enter to horizon - no VPN tab 
3./usr/share/openstack-dashboard/openstack_dashboard/local/local_settings.py 
vpn is in false

Actual results:


Expected results:


Additional info: