Test failure in Nordix Jenkins.

Test passes in most other situations, e.g. local machine, ONAP jenkins etc.

getLocalHost() can fail on some embedded executors e.g. where /etc/hosts does not exist, is not correct, etc.

Test fails:
org.onap.policy.apex.core.infrastructure.messaging.EndToEndStringMessagingTest

java.net.UnknownHostException: onap-build-ubuntu1604-241: onap-build-ubuntu1604-241: Name or service not known
at java.net.InetAddress.getLocalHost(InetAddress.java:1506)
at org.onap.policy.apex.core.infrastructure.messaging.stringmessaging.WsStringMessageServer.start(WsStringMessageServer.java:76)
at org.onap.policy.apex.core.infrastructure.messaging.EndToEndStringMessagingTest.testEndToEndMessaging(EndToEndStringMessagingTest.java:53)

...

Caused by: java.net.UnknownHostException: onap-build-ubuntu1604-241: Name or service not known
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324)
at java.net.InetAddress.getLocalHost(InetAddress.java:1501)