Update either documentation or configuration for current Infinispan defaults

[dougbreaux]

Some details in my StackOverflow Q&A, but it appears the current Infinispan instructions either don't account for or don't warn about the default cluster setup, which wants TLS communication.

I had to explicitly create a new cluster with

  security:
    endpointEncryption:
      type: None

or both the client and server complained of communication problems.

Infinispan server logged:

03:40:18,628 WARN  (SINGLE_PORT-ServerIO-4-2) [io.netty.handler.ssl.ApplicationProtocolNegotiationHandler] [id: 0xc39380c8, L:/10.254.0.248:11222 ! R:/10.254.2.65:32986] TLS handshake failed: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: a0061e21000003ffffffff0f0000
    at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1254)

Liberty client logged:

INFINISPAN_SERVICE_NAME(original): session-infinispan
INFINISPAN_SERVICE_NAME(normalized): SESSION_INFINISPAN
INFINISPAN_HOST: 172.30.137.86
INFINISPAN_PORT: 11222
INFINISPAN_USER: developer
INFINISPAN_PASS: <redacted>

Launching defaultServer (WebSphere Application Server 21.0.0.3/wlp-1.0.50.cl210320210309-1101) on Eclipse OpenJ9 VM, version 1.8.0_282-b08 (en_US)
[AUDIT   ] CWWKE0001I: The server defaultServer has been launched.
[AUDIT   ] CWWKE0100I: This product is licensed for development, and limited production use. The full license terms can be viewed here: https://public.dhe.ibm.com/ibmdl/export/pub/software/websphere/wasdev/license/base_ilan/ilan/21.0.0.3/lafiles/en.html
[AUDIT   ] CWWKG0093A: Processing configuration drop-ins resource: /opt/ibm/wlp/usr/servers/defaultServer/configDropins/defaults/keystore.xml
[AUDIT   ] CWWKG0093A: Processing configuration drop-ins resource: /opt/ibm/wlp/usr/servers/defaultServer/configDropins/overrides/infinispan-client-sessioncache.xml
[AUDIT   ] CWWKZ0058I: Monitoring dropins for applications.
[AUDIT   ] CWWKT0016I: Web application available (default_host): http://payment-engine-6dcc5b6d5-jclx2:9080/payment/
[ERROR   ] ISPN004007: Exception encountered. Retry 10 out of 10
org.infinispan.client.hotrod.exceptions.TransportException:: ISPN004071: Connection to 172.30.137.86/172.30.137.86:11222 was closed while waiting for response.
[ERROR   ] SESN0307E: An exception occurred when initializing the cache. The exception is: org.infinispan.client.hotrod.exceptions.TransportException:: org.infinispan.client.hotrod.exceptions.TransportException:: ISPN004071: Connection to 172.30.137.86/172.30.137.86:11222 was closed while waiting for response.
    at org.infinispan.client.hotrod.impl.transport.netty.ActivationHandler.exceptionCaught(ActivationHandler.java:53)
    at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:300)
...