A pool represents a group of members over which the load balancing will be applied.
  Algorithm:
  
  The load balancer algorithm that distributes traffic to the pool members.
  
  
    - 
      LEAST_CONNECTIONS: Allocates requests to the instance with the least number of active
      connections.
    
- 
      ROUND_ROBIN: Rotates requests evenly between multiple instances.
    
- 
      SOURCE_IP: Requests from a unique source IP address are consistently directed to the same instance.
    
  Protocol:
  
  The protocol for which this pool and its members listen. A valid value is HTTP, HTTPS, PROXY, PROXYV2, TCP, UDP or SCTP.
  
  Session Persistence:
  
  The type of session persistence for distributing traffic to the pool members.
  
  
    - 
      SOURCE_IP: Session persistence based on source ip.
    
- 
      HTTP_COOKIE: Session persistence based on http cookie.
    
- 
      APP_COOKIE: Session persistence based on application cookie.
    
  TLS Enabled:
  
  Enable TLS for backend re-encryption, communications between the load
  balancer and the member servers are encrypted.
  
  TLS Cipher String:
  
  A string of the allowed ciphers using the OpenSSL syntax. The syntax
  is a colon separated list of the chiphers, ex.
  "TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256"
  Note, don't include quotation marks. An empty string sets the default TLS
  Cipher String configured in Octavia.