AMBARI-21677. Upgrade Pre-Checks Should Take PATCH/SERVICE Types Into Account - fix import

ambari-server/src/test/java/org/apache/ambari/server/checks/AbstractCheckDescriptorTest.java

@@ -36,13 +36,13 @@ import org.apache.ambari.server.state.repository.VersionDefinitionXml;
 import org.apache.ambari.server.state.stack.PrereqCheckType;
 import org.apache.ambari.server.state.stack.PrerequisiteCheck;
 import org.apache.ambari.server.state.stack.upgrade.UpgradeType;
-import org.apache.hadoop.metrics2.sink.relocated.google.common.collect.Sets;
 import org.easymock.EasyMock;
 import org.easymock.EasyMockSupport;
 import org.easymock.Mock;
 import org.junit.Before;
 import org.junit.Test;
 
+import com.google.common.collect.Sets;
 import com.google.inject.Provider;
 
 import junit.framework.Assert;
@@ -303,4 +303,4 @@ public class AbstractCheckDescriptorTest extends EasyMockSupport {
         throws AmbariException {
     }
   }
-}
+}