Increase resolve timeout in unknown hosts test

The port limit test is a simple test that fakes that resolving an
address with a port range results the correct address collection.  This
test is subject to a race condition where the timeout on the resolve
request can fire before the resolve code finishes executing (this race
is exceptionally rare, because there are not actually any DNS lookups
being done here since we are just resolving addresses). This commit
increases the timeout here to significantly reduce the chance of a
losing race causing a spurious test failure. This increased timeout
should not increase the runtime of the test, just make failures less
likely.

core/src/test/java/org/elasticsearch/discovery/zen/UnicastZenPingTests.java

@@ -397,7 +397,7 @@ public class UnicastZenPingTests extends ESTestCase {
             limitPortCounts,
             transportService,
             () -> Integer.toString(idGenerator.incrementAndGet()),
-            TimeValue.timeValueMillis(100));
+            TimeValue.timeValueSeconds(1));
         assertThat(discoveryNodes, hasSize(limitPortCounts));
         final Set<Integer> ports = new HashSet<>();
         for (final DiscoveryNode discoveryNode : discoveryNodes) {