@Test
    void non_zero_crash_count_update_does_not_reset_unstable_init_flag() {
        ClusterFixture fixture = fixtureWithNodeMarkedAsUnstableInit(1);

        final NodeInfo nodeInfo = fixture.cluster.getNodeInfo(new Node(NodeType.STORAGE, 1));
        nodeInfo.setPrematureCrashCount(3);
        assertTrue(nodeInfo.recentlyObservedUnstableDuringInit());
    }
A non-zero crash count update, on the other hand, implies the node is suffering
further instabilities and should not clear the unstable init flag.
clustercontroller-core/src/test/java/com/yahoo/vespa/clustercontroller/core/NodeInfoTest.java