SSL parameters specified on the bootstrap server are not copied down to the volatile ones. This is causing SSL setup between MaxScale and XPAND not working properly.

Repro
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1. setup xpand cluster with ssl
3-node Xpand cluster

2. Configure maxscale with one xpand node as a server

1. cat /etc/maxscale.cnf
   [maxscale]
   log_info=1
   logdir=/data/clustrix/log
   threads=auto

[xpand1]
type=server
address=oak012white.colo.sproutsys.com
port=3306
protocol=mariadbbackend
ssl=true
ssl_cert=/etc/ssl/maxscale/server-cert.pem
ssl_key=/etc/ssl/maxscale/server-key.pem
ssl_ca=/etc/ssl/maxscale/ca-cert.pem

1. Backend specific monitor and router:
   [Backend-Monitor]
   type=monitor
   module=xpandmon
   servers=xpand1
   user=maxscale
   password=maxscale_pw
   cluster_monitor_interval=10000ms

[Read-Only-Service]
type=service
router=readconnroute
user=maxscale
password=maxscale_pw
router_options=running
cluster=Backend-Monitor

[Read-Only-Listener]
type=listener
service=Read-Only-Service
protocol=MariaDBClient
address=0.0.0.0
port=3307
authenticator=pamauth
authenticator_options=pam_backend_mapping=mariadb_passthrough
ssl=true
ssl_cert=/etc/ssl/maxscale/client-cert.pem
ssl_key=/etc/ssl/maxscale/client-key.pem
ssl_ca=/etc/ssl/maxscale/ca-cert.pem

3. start maxscale

4. show server shows ssl=true only for one xpand node, for the remaining it's ssl=false