Fix concurrent access of node permissioning allow list

[pullurib]

PR description

ArrayList() used for allowlist is not threadsafe. Adding/removing entries while iterating the list to check for an entry in isPermitted() will throw this exception. Added a testcase for this situation.

java.util.ConcurrentModificationException
	at java.base/java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1687)
	at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230)
	at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:632)
	at org.hyperledger.besu.ethereum.permissioning.NodeLocalConfigPermissioningController.isPermitted(NodeLocalConfigPermissioningController.java:245)
	at org.hyperledger.besu.ethereum.permissioning.NodeLocalConfigPermissioningController.isPermitted(NodeLocalConfigPermissioningController.java:238)
	at org.hyperledger.besu.ethereum.permissioning.NodeLocalConfigPermissioningControllerTest.lambda$whenCallingIsPermittedAndRemovingEntryInAnotherThreadShouldNotThrowException$0(NodeLocalConfigPermissioningControllerTest.java:335)
	at java.base/java.lang.Thread.run(Thread.java:1583)

....

OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
> Task :ethereum:permissioning:test
NodeLocalConfigPermissioningControllerTest > whenCallingIsPermittedAndRemovingEntryInAnotherThreadShouldNotThrowException() FAILED
    java.lang.AssertionError at NodeLocalConfigPermissioningControllerTest.java:367
1 test completed, 1 failed

Using CopyOnWriteArrayList is a simple fix considering it’s not a write heavy list

Fixed Issue(s)

#7916