TimerManagementTestCase fail with non-"en_US.UTF-8" locale settings

Description of problem:
TimerManagementTestCase fail with non-"en_US.UTF-8" locale settings. These LANG are affected:

• de_DE.UTF-8
• es_ES.UTF-8
• fr_FR.UTF-8
• ja_JP.UTF-8
• pt_BR.UTF-8
• zh_CN.UTF-8

How reproducible:
Always

Steps to Reproduce:

1. export LANG=de_DE.UTF-8
2. mvn install -B -fae -Dmaven.test.failure.ignore=true -llr -Dnode0=$MYTESTIP_1 -Dnode1=$MYTESTIP_2 -Dts.basic -Djboss.dist=$JBOSS_DIST -Dtest=TimerManagementTestCase -DfailIfNoTests=false -DtestLogToFile=false

Actual results:

java.lang.AssertionError: "{\"outcome\" => \"failed\",\"failure-description\" => \"WFLYCTL0216: Recurso de administración '[
    (\\\"deployment\\\" => \\\"ejb-mgmt-timers.jar\\\"),
    (\\\"subsystem\\\" => \\\"ejb3\\\"),
    (\\\"stateless-session-bean\\\" => \\\"TimerBean\\\"),
    (\\\"service\\\" => \\\"timer-service\\\"),
    (\\\"timer\\\" => \\\"8355ac14-8067-436c-9e50-3fcf77eff7cf\\\")
]' no encontrado\",\"rolled-back\" => true}"