Revisit TLS Cluster tests to drop stunnel

[ggivo]

SSL/TLS is supported natively by Redis starting with version 6.

With #4015 we are migrating test infra toward containerized env to support multiple Redis version test matrices.
Now we are using native TLS/SSL Redis support, while the previous test infra was relying on stunnel with custom host/port mappings.

Simply removing the port mapping is sufficient for Redis server 7.x and above.
Some tests are still failing when run against Redis 6.2.16 because difference in how ports are reported in CLUSTER SLOTS command see(redis/redis#8134, redis/redis#8587)

Tests to be revisited :

Error:  Errors: 
Error:    SSLACLJedisClusterTest.connectByIpAddress:147 » JedisClusterOperation Cluster retry deadline exceeded.
Error:    SSLACLJedisClusterTest.connectToNodesSucceedsWithSSLParametersAndHostMapping:188 » JedisClusterOperation Cluster retry deadline exceeded.
Error:    SSLACLJedisClusterTest.testSSLDiscoverNodesAutomatically:80 » JedisConnection javax.net.ssl.SSLException: Read timed out
Error:    SSLACLJedisClusterTest.testSSLWithoutPortMap:125 » JedisConnection javax.net.ssl.SSLException: Read timed out
Error:    SSLJedisClusterTest.connectByIpAddress:127 » JedisClusterOperation Cluster retry deadline exceeded.
Error:    SSLJedisClusterTest.connectToNodesSucceedsWithSSLParametersAndHostMapping:165 » JedisClusterOperation Cluster retry deadline exceeded.
Error:    SSLJedisClusterTest.testSSLDiscoverNodesAutomatically:64 » JedisConnection javax.net.ssl.SSLException: Read timed out
Error:    SSLJedisClusterTest.testSSLWithoutPortMap:106 » JedisConnection javax.net.ssl.SSLException: Read timed out

Expected behavior

 TLS/SSL tests pass successfully against test env using native Redis server TLS/SSL supprt (e.g no stunnel)

Actual behavior

TLS/SSL tests failures observed  when using Redis 6.2.16 native TLS/SSL support
same tests pass successfully against  Redis 7.+ native TLS/SSL support

Steps to reproduce:

  Bring up test 6.2.16 test infra env using containerized setup introduced with (https://github.com/redis/jedis/pull/4015)
  `docker compose --env-file src/test/resources/env/.env.v6.2.16 -f src/test/resources/env/docker-compose.yml up`

   Run TLS/SSL tests (SSLJedisClusterTest, SSLACLJedisClusterTest)

Redis / Jedis Configuration

depends on test

Jedis version:

5.2.0

Redis version:

6.2.16

Java version:

1.8