Coprocessor upload tool

Today, Table coprocessors are created on demand when a Table is created.

In order to support cluster replication, CDAP coprocessors need to be present on hdfs for both master and slave clusters. To support this, it would be desirable to have a tool that can be run that will build relevant coprocessor jar(s) and put them on hdfs. This tool can then be run on the slave cluster and CDAP can be changed to use the pre-built coprocessor jar(s) instead of building at creation time.