1. refactor listener detail and actions code to optimize requests
2. fix remove health monitor
3. hide admin_state_up form item when disable health monitor in the lb step create page
4. support updating admin_state_up when editing health monitor
5. support admin_state_up info in the health monitor card in the lisenter detail page
Change-Id: Id1a9c32ddae09b1ae3dfb613bd7468a372aa5478
