Test testClusterSnapshotCheckWithNodeFilter is flaky

  java.lang.AssertionError: Snapshot working directory must be empty at the moment test execution stopped: /opt/buildagent/work/7bc1c54bc719b67c/work/db/snapshot_IgniteClusterSnapshotCheckWithIndexesTest1/snp expected:<0> but was:<513>
    at org.junit.Assert.fail(Assert.java:88)
    at org.junit.Assert.failNotEquals(Assert.java:834)
    at org.junit.Assert.assertEquals(Assert.java:645)
    at org.apache.ignite.testframework.junits.JUnitAssertAware.assertEquals(JUnitAssertAware.java:119)
    at org.apache.ignite.internal.processors.cache.persistence.snapshot.AbstractSnapshotSelfTest.afterTestSnapshot(AbstractSnapshotSelfTest.java:163)
    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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
    at org.apache.ignite.testframework.junits.GridAbstractTest$7.run(GridAbstractTest.java:2432)
    at java.lang.Thread.run(Thread.java:748)