HIVE-3393 brought in Jackson library,and these four jars should be packed into hive-exec.jar

Some jars of Hive are required not only by the client but also the server (every Hadoop slave),
though we could use 'add jar' command to add all the jars in dis-cache ,
but in common way ,we may add these jars in $HADOOP_HOME/lib/ of every salve of the Hadoop Cluster,
and need restart all the tasktrackers .

For example:
When using hive stats, If we use mysql as tmp stats db ,every salve of the Hadoop Cluster should contain
mysql-connector-java-****.jar in $HADOOP_HOME/lib/

And for column stats
In all slaves $HADOOP_HOME/lib/ should contain:
jackson-core-asl-1.8.8.jar
jackson-jaxrs-1.8.8.jar
jackson-mapper-asl-1.8.8.jar
jackson-xc-1.8.8.jar

These jars should be separated from other common client-side-jars .