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[lee jian <leejian0612@xxxxxxxxx>]

Public bug reported:

vpn agent is inherited from l3 agent,  and use l3's report_status  function to sync status, when running agent-list, we can not see its information , although vpn agent is enabled, this is confusing.  So override its agent_state['binary'] to make admin know  neutron-vpn-agent is running not the neutron-l3-agent, and leave the agent_type to 'L3 agent', which will be used to schedule router resource.
Here is the out before：
+--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
| id                                   | agent_type         | host              | alive | admin_state_up | binary                    |
+--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
| 9070ec99-90f0-4fb6-b990-ba840986123a | DHCP agent         | zy126.sce.ibm.com | :-)   | True           | neutron-dhcp-agent        |
| 5f62b451-2ff7-4399-9225-d730b8a55e50 | Loadbalancer agent | zy126.sce.ibm.com | :-)   | True           | neutron-lbaas-agent       |
| c02bfa52-eb2b-46a7-95ba-312cfcaaec44 | Open vSwitch agent | zy126.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
| 46e2e710-8da3-4549-8502-524da817172c | Metadata agent     | zy126.sce.ibm.com | :-)   | True           | neutron-metadata-agent    |
| fc313849-fbdf-4244-9767-57d273bf7e55 | Open vSwitch agent | zy127.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
| 84d4ae21-3095-4acb-ad1c-00004ff043a3 | L3 agent           | zy126.sce.ibm.com | :-)   | True           | neutron-l3-agent          |
+--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+

Here is the output after change the code:
 +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
| id                                   | agent_type         | host              | alive | admin_state_up | binary                    |
+--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
| 9070ec99-90f0-4fb6-b990-ba840986123a | DHCP agent         | zy126.sce.ibm.com | :-)   | True           | neutron-dhcp-agent        |
| 5f62b451-2ff7-4399-9225-d730b8a55e50 | Loadbalancer agent | zy126.sce.ibm.com | :-)   | True           | neutron-lbaas-agent       |
| c02bfa52-eb2b-46a7-95ba-312cfcaaec44 | Open vSwitch agent | zy126.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
| 46e2e710-8da3-4549-8502-524da817172c | Metadata agent     | zy126.sce.ibm.com | :-)   | True           | neutron-metadata-agent    |
| fc313849-fbdf-4244-9767-57d273bf7e55 | Open vSwitch agent | zy127.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
| eb16d147-2242-48e0-92c5-08575d9e9d03 | L3 agent           | zy126.sce.ibm.com | :-)   | True           | neutron-vpn-agent         |
+--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1472494

Title:
  when enable vpn agent,  no vpn related infomation is shown by running
  'neutron agent list' .

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  vpn agent is inherited from l3 agent,  and use l3's report_status  function to sync status, when running agent-list, we can not see its information , although vpn agent is enabled, this is confusing.  So override its agent_state['binary'] to make admin know  neutron-vpn-agent is running not the neutron-l3-agent, and leave the agent_type to 'L3 agent', which will be used to schedule router resource.
  Here is the out before：
  +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
  | id                                   | agent_type         | host              | alive | admin_state_up | binary                    |
  +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
  | 9070ec99-90f0-4fb6-b990-ba840986123a | DHCP agent         | zy126.sce.ibm.com | :-)   | True           | neutron-dhcp-agent        |
  | 5f62b451-2ff7-4399-9225-d730b8a55e50 | Loadbalancer agent | zy126.sce.ibm.com | :-)   | True           | neutron-lbaas-agent       |
  | c02bfa52-eb2b-46a7-95ba-312cfcaaec44 | Open vSwitch agent | zy126.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
  | 46e2e710-8da3-4549-8502-524da817172c | Metadata agent     | zy126.sce.ibm.com | :-)   | True           | neutron-metadata-agent    |
  | fc313849-fbdf-4244-9767-57d273bf7e55 | Open vSwitch agent | zy127.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
  | 84d4ae21-3095-4acb-ad1c-00004ff043a3 | L3 agent           | zy126.sce.ibm.com | :-)   | True           | neutron-l3-agent          |
  +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+

  Here is the output after change the code:
   +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
  | id                                   | agent_type         | host              | alive | admin_state_up | binary                    |
  +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+
  | 9070ec99-90f0-4fb6-b990-ba840986123a | DHCP agent         | zy126.sce.ibm.com | :-)   | True           | neutron-dhcp-agent        |
  | 5f62b451-2ff7-4399-9225-d730b8a55e50 | Loadbalancer agent | zy126.sce.ibm.com | :-)   | True           | neutron-lbaas-agent       |
  | c02bfa52-eb2b-46a7-95ba-312cfcaaec44 | Open vSwitch agent | zy126.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
  | 46e2e710-8da3-4549-8502-524da817172c | Metadata agent     | zy126.sce.ibm.com | :-)   | True           | neutron-metadata-agent    |
  | fc313849-fbdf-4244-9767-57d273bf7e55 | Open vSwitch agent | zy127.sce.ibm.com | :-)   | True           | neutron-openvswitch-agent |
  | eb16d147-2242-48e0-92c5-08575d9e9d03 | L3 agent           | zy126.sce.ibm.com | :-)   | True           | neutron-vpn-agent         |
  +--------------------------------------+--------------------+-------------------+-------+----------------+---------------------------+

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