Investigate EC2 machines not getting a public IP address

[rjanik114]

I've caught this twice today:

10:16:44.907 [ForkJoinPool.commonPool-worker-1] INFO  sunstone.core - Started Amazon EC2 node 'node1' from image us-east-1/ami-6445c773, its public IP address is null

My test then fails because the IP address can't be null:

Caused by: java.lang.IllegalStateException: node does not have IP addresses configured: {redacted}
	at com.google.common.base.Preconditions.checkState(Preconditions.java:199)
	at org.jclouds.compute.util.ConcurrentOpenSocketFinder.checkNodeHasIps(ConcurrentOpenSocketFinder.java:191)
	at org.jclouds.compute.util.ConcurrentOpenSocketFinder.findOpenSocketOnNode(ConcurrentOpenSocketFinder.java:82)
	at org.wildfly.extras.sunstone.api.impl.AbstractJCloudsNode.waitForPorts(AbstractJCloudsNode.java:191)
	at org.wildfly.extras.sunstone.api.impl.AbstractJCloudsNode.waitForStartPorts(AbstractJCloudsNode.java:182)
	at org.wildfly.extras.sunstone.api.impl.ec2.EC2Node.<init>(EC2Node.java:91)
	at org.wildfly.extras.sunstone.api.impl.ec2.EC2CloudProvider.createNodeInternal(EC2CloudProvider.java:73)
	at org.wildfly.extras.sunstone.api.impl.AbstractJCloudsCloudProvider.lambda$createNode$0(AbstractJCloudsCloudProvider.java:100)
	at java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1853)
	at org.wildfly.extras.sunstone.api.impl.AbstractJCloudsCloudProvider.createNode(AbstractJCloudsCloudProvider.java:95)
	at org.wildfly.extras.sunstone.api.impl.AbstractJCloudsCloudProvider.lambda$createNodeAsync$3(AbstractJCloudsCloudProvider.java:164)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
	... 5 more

I'll assign myself because I intend to investigate this in time, but if someone wants to take it, sure, go ahead. Ask me if you want instructions on how to reproduce it, but know that the fail is random.