[678098]

Logs never showed up when tests ran in CI. slf4j-api 2.x does not support the old log4j-slf4j-impl bridge, which was written for slf4j 1.7. It skipped that bridge and used the no-op logger, so every log call did nothing.

Changes:

• Switch to log4j-slf4j2-impl, the log4j bridge for slf4j 2.x (sdk tests and examples).
• Set the default test log level to WARN. Use -Dbmq.log.level=info (or debug) for more detail.

Before

[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.bloomberg.bmq.it.BrokerSessionIT
SLF4J(W): No SLF4J providers were found.
SLF4J(W): Defaulting to no-operation (NOP) logger implementation
SLF4J(W): See https://www.slf4j.org/codes.html#noProviders for further details.
SLF4J(W): Class path contains SLF4J bindings targeting slf4j-api versions 1.7.x or earlier.
SLF4J(W): Ignoring binding found at [jar:file:/home/runner/.m2/repository/org/apache/logging/log4j/log4j-slf4j-impl/2.26.1/log4j-slf4j-impl-2.26.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J(W): See https://www.slf4j.org/codes.html#ignoredBindings for an explanation.
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
[WARNING] Tests run: 38, Failures: 0, Errors: 0, Skipped: 1, Time elapsed: 272.9 s -- in com.bloomberg.bmq.it.BrokerSessionIT

After

[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.bloomberg.bmq.it.BrokerSessionIT
20:15:00,900 (pool-3-thread-1) WARN SystemUtil:64 HOSTNAME env variable is not set, using 'localhost'
20:15:01,055 (pool-3-thread-1) ERROR OpenQueueStrategy:82 Open queue failed: {"rId":3,"status":{"category":"E_UNKNOWN","code":0,"message":""}}
20:15:03,059 (pool-3-thread-1) ERROR OpenQueueStrategy:82 Open queue failed: {"rId":4,"status":{"category":"E_TIMEOUT","code":0,"message":""}}
20:15:21,125 (pool-3-thread-1) ERROR LateResponseHandler:65 Inappropriate late response received: {"rId":35,"closeQueueResponse":{}}
20:15:26,158 (pool-5-thread-1) WARN SystemUtil:64 HOSTNAME env variable is not set, using 'localhost'
20:15:36,223 (pool-7-thread-1) WARN SystemUtil:64 HOSTNAME env variable is not set, using 'localhost'
20:15:36,227 (pool-7-thread-1) ERROR StandaloneConfigureQueueStrategy:40 Queue is not opened.
20:15:36,227 (pool-7-thread-1) ERROR QueueControlStrategy:159 Precondition for starting sequence failed.