Simplify to not need the SNI route

[DanRoseus]

When using MQ client 9.3 the SNI route is only needed if using per channel certs. The SNI route is pretty ugly, requiring channel names to be unique across the whole cluster, so it would be nice to relax that requirement. I found the first sample works if I remove the SNI route, add the following client.ini file:

SSL:
    OutboundSNI=HOSTNAME

And set the following env var:

export MQCLNTCF=`pwd`/client.ini