When disabling VRRP AUTH, avoid having an empty configuration in
keepalived.conf like this:
authentication {
auth_type
auth_pass
}
And have errors when starting Keepalived.
Setting to False by default ensure to not have this situation.
Also, ensure we use an array for keepalived_internal_ipvs parameter to
make the difference possible even if the param is not an array.
e93468bac0