Merge pull request #892 from richbrowne/master

Add agent liveness check to scheduler

Author: jlongstaf

f5lbaasdriver/v2/bigip/agent_scheduler.py

@@ -100,8 +100,11 @@ def get_dead_agents_in_env(
                                             active=None)
 
         for agent in all_agents:
+
             if not plugin.db.is_eligible_agent(active=True, agent=agent):
-                if not agent['admin_state_up']:
+                agent_dead = plugin.db.is_agent_down(
+                    agent['heartbeat_timestamp'])
+                if not agent['admin_state_up'] or agent_dead:
                     return_agents.append(agent)
         return return_agents