fix up import

Author: 高章敏

pulsar-flink-connector/src/main/java/org/apache/flink/streaming/connectors/pulsar/FlinkPulsarSinkBase.java

@@ -40,8 +40,8 @@
 
 import org.apache.flink.shaded.guava18.com.google.common.collect.Maps;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.ObjectWriter;
+import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectWriter;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.pulsar.client.admin.PulsarAdmin;
 import org.apache.pulsar.client.api.MessageId;

pulsar-flink-connector/src/main/java/org/apache/flink/streaming/connectors/pulsar/FlinkPulsarSource.java

@@ -62,8 +62,8 @@
 
 import org.apache.flink.shaded.guava18.com.google.common.collect.Sets;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.ObjectWriter;
+import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectWriter;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.pulsar.client.api.MessageId;
 import org.apache.pulsar.client.api.PulsarClientException;