Shared secret for the load balancer communication log.
Note: The secret must be the same on all of the VPN gateways in a cluster.
    - SNMP ID:
 - 2.19.50.3.9
 - Console path:
 - Setup > VPN > IKEv2 Load Balancer > Message-Profiles
 - Possible values:
 32 characters from the following character set [A-Z a-z 0-9 @{|}~!$%'()+-,/:;?[\]^_.&<=>]