Unexpected auth dir in standalone/tmp when -Djboss.server.temp.dir is used

Unexpected 'auth' dir is created in standalone/tmp when -Djboss.server.temp.dir is used.

There shouldn't be tmp directory at all.

Steps to reproduce:

• remove everything from 'standalone' directory with exception for 'configuration' and 'deployments' sub-directories
• run standalone - 'bin/standalone.sh -Djboss.server.log.dir=xx-log -Djboss.server.data.dir=xx-data -Djboss.server.temp.dir=xx-temp -Djboss.server.deploy.dir=xx-deployments'
• list recursively 'standalone' directory – 'tmp' directory with 'auth' subdirectory is created

'jboss.server.temp.dir' property is not 100% reflected.