Need to initialize SLF4JBridgeHandler in jul-to-slf4j for redirecting jul to slf4j

When testing HBASE-22120 with logging exporter, the trace log messages were all redirected to console...

They use jul to log the spans and we have jul-to-slf4j on classpath.

Then I found out that we need to call SLF4JBridgeHandler.install...

Let me find a way to do this.