[CI] NodeStatsMonitoringDocTests#testToUTC fails #38359
Description
Build: https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+intake/1812/console
Couldn't reproduce locally but looks like a date formatting issue.
./gradlew :x-pack:plugin:monitoring:unitTest \
-Dtests.seed=1B6F728E6033F9E8 \
-Dtests.class=org.elasticsearch.xpack.monitoring.collector.node.NodeStatsMonitoringDocTests \
-Dtests.method="testToUTC" \
-Dtests.security.manager=true \
-Dtests.locale=lv-LV \
-Dtests.timezone=GMT0 \
-Dcompiler.java=11 \
-Druntime.java=8
org.junit.ComparisonFailure: expected:<2019-02-04T16:31:46[]Z> but was:<2019-02-04T16:31:46[.000]Z>
at __randomizedtesting.SeedInfo.seed([1B6F728E6033F9E8:F583DD13D392E2A0]:0)
at org.junit.Assert.assertEquals(Assert.java:115)
at org.junit.Assert.assertEquals(Assert.java:144)
at org.elasticsearch.xpack.monitoring.exporter.BaseMonitoringDocTestCase.testToUTC(BaseMonitoringDocTestCase.java:173)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)