AsyncTwoPhaseIndexerTests failure

[davidkyle]

https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+intake/3534/testReport/junit/org.elasticsearch.xpack.core.indexing/AsyncTwoPhaseIndexerTests/testStateMachine/

Caused by: java.lang.AssertionError: 
Expected: <3>
     but: was <5>
	at __randomizedtesting.SeedInfo.seed([5119E6D95F3BD4B0]:0)
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
	at org.junit.Assert.assertThat(Assert.java:956)
	at org.junit.Assert.assertThat(Assert.java:923)
	at org.elasticsearch.xpack.core.indexing.AsyncTwoPhaseIndexerTests$MockIndexer.doSaveState(AsyncTwoPhaseIndexerTests.java:113)

Does not reproduce

/gradlew :x-pack:plugin:core:test --tests "org.elasticsearch.xpack.core.indexing.AsyncTwoPhaseIndexerTests.testStateMachine" -Dtests.seed=5119E6D95F3BD4B0 -Dtests.security.manager=true -Dtests.locale=xog -Dtests.timezone=CTT -Dcompiler.java=12 -Druntime.java=11

[elasticmachine]

Pinging @elastic/ml-core

[elasticmachine]

Pinging @elastic/es-analytics-geo