ConcurrentModificationException in ActivationSecurityUtil.isLegacySecurityRequired on JBoss EAP 7.1.6 and earlier versions

Issue

• Hitting ConcurrentModificationException when deploying JMS resource adaptor on JBoss EAP startup
• Start up randomly fails with an error like below:

 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC000001: Failed to start service jboss.resourceadapters.ra."wmq.jmsra.rar".CF: org.jboss.msc.service.StartException in service jboss.resourceadapters.ra."wmq.jmsra.rar".CF: Failed to start service
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1978)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.ConcurrentModificationException
    at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
    at java.util.ArrayList$Itr.next(ArrayList.java:859)
    at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042)
    at org.jboss.as.connector.metadata.api.resourceadapter.ActivationSecurityUtil.isLegacySecurityRequired(ActivationSecurityUtil.java:41)
    at org.jboss.as.connector.subsystems.resourceadapters.ConnectionDefinitionService.start(ConnectionDefinitionService.java:68)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
    ... 3 more