ISPN-4283 Support free-form SASL properties on the Hot Rod endpoint configuration
ISPN-4284 Special handling for the realm DIGEST-MD5 mech so that pre-digested and plain-text passwords are both supported when using the jboss-sasl digest mech
ISPN-4285 Once the SASL client returns a null response for a challenge, don't continue the server exchange
Remove minor incompatibility introduced by commit 83cb4dae982bd6e683407ce763b276a812e4c8d5
ISPN-4275 Create server integration tests for HotRod SASL auth