Description of problem:
We executed the "openstack server delete MASTER_AMPHORA_ID"
The amphora is deleted and not recreated.
Sometimes it is recreated sometimes it is not. 

Version-Release number of selected component (if applicable):
13

How reproducible:
50-75%

Steps to Reproduce:
1. Deploy Openstack with Octavia (active_standby)
2. Create LB objects and run traffic to vip so you see that the LB is working. 
3. execute "openstack server delete MASTER AMPHORA VM ID"

If the VM is recreated, try it several times.

Actual results:
AMphora VM is not recreated sometimes. We waited more than 35 min before deciding it is an issue. 

Expected results:
Amphora VM Should be recreated.

Additional info:
In order to recover from this situation run "openstack loadbalancer failover" command. 

(overcloud) [stack@undercloud-0 ~]$  openstack server list --all 
+--------------------------------------+----------------------------------------------+--------+-----------------------------------------------------------+----------------------------------------+--------+
| ID                                   | Name                                         | Status | Networks                                                  | Image                                  | Flavor |
+--------------------------------------+----------------------------------------------+--------+-----------------------------------------------------------+----------------------------------------+--------+
| f5c582b8-87b1-4949-981c-2ed47bd7c2c9 | amphora-655b11f3-5e69-40e0-a0d1-dce54d62ccab | ACTIVE | int_net=192.168.2.16; lb-mgmt-net=172.24.0.10, 10.0.0.218 | octavia-amphora-13.0-20191031.1.x86_64 |        |
| 14a4626f-b9f3-4d72-a415-58e95eb331bf | amphora-703c9449-990b-4b8b-b2f5-39339003cdee | ACTIVE | int_net=192.168.2.12; lb-mgmt-net=172.24.0.23, 10.0.0.224 | octavia-amphora-13.0-20191031.1.x86_64 |        |
| 46219a32-0e60-4b39-9855-c80984bfda47 | lbtree-server2-xmuv3gvzoyyj                  | ACTIVE | int_net=192.168.2.18                                      | cirros-0.4.0-x86_64-disk.img           | cirros |
| 7b0d1c62-bdba-4429-8732-b77d6f0798bf | lbtree-server1-6ifxbfupex4j                  | ACTIVE | int_net=192.168.2.9, 10.0.0.211                           | cirros-0.4.0-x86_64-disk.img           | cirros |
+--------------------------------------+----------------------------------------------+--------+-----------------------------------------------------------+----------------------------------------+--------+
(overcloud) [stack@undercloud-0 ~]$ openstack server delete f5c582b8-87b1-4949-981c-2ed47bd7c2c9
(overcloud) [stack@undercloud-0 ~]$ 
(overcloud) [stack@undercloud-0 ~]$ 
(overcloud) [stack@undercloud-0 ~]$ 
(overcloud) [stack@undercloud-0 ~]$ watch openstack server list --all 
(overcloud) [stack@undercloud-0 ~]$ openstack server delete b78411dd-4e88-4a65-bc03-e2c08fa9ac72
(overcloud) [stack@undercloud-0 ~]$ 
(overcloud) [stack@undercloud-0 ~]$ 
(overcloud) [stack@undercloud-0 ~]$ 
(overcloud) [stack@undercloud-0 ~]$ watch openstack server list --all 
(overcloud) [stack@undercloud-0 ~]$  openstack server list --all 
+--------------------------------------+----------------------------------------------+--------+-----------------------------------------------------------+----------------------------------------+--------+
| ID                                   | Name                                         | Status | Networks                                                  | Image                                  | Flavor |
+--------------------------------------+----------------------------------------------+--------+-----------------------------------------------------------+----------------------------------------+--------+
| 14a4626f-b9f3-4d72-a415-58e95eb331bf | amphora-703c9449-990b-4b8b-b2f5-39339003cdee | ACTIVE | int_net=192.168.2.12; lb-mgmt-net=172.24.0.23, 10.0.0.224 | octavia-amphora-13.0-20191031.1.x86_64 |        |
| 46219a32-0e60-4b39-9855-c80984bfda47 | lbtree-server2-xmuv3gvzoyyj                  | ACTIVE | int_net=192.168.2.18                                      | cirros-0.4.0-x86_64-disk.img           | cirros |
| 7b0d1c62-bdba-4429-8732-b77d6f0798bf | lbtree-server1-6ifxbfupex4j                  | ACTIVE | int_net=192.168.2.9, 10.0.0.211                           | cirros-0.4.0-x86_64-disk.img           | cirros |
+--------------------------------------+----------------------------------------------+--------+-----------------------------------------------------------+----------------------------------------+--------+
(overcloud) [stack@undercloud-0 ~]$