[Tools] Copy tablets from a remote server in batch

The command: kudu local_replica copy_from_remote only supports to copy one
tablet from a remote server once a time. It is not efficient when we need
to copy all tablets from a remote server.

Therefore this patch supports to copy tablets from a remote server in batch.

Change-Id: Ib598142883b8ab958625a4f04648d58ea95f3664
Reviewed-on: http://gerrit.cloudera.org:8080/18732
Tested-by: Kudu Jenkins
Reviewed-by: Yingchun Lai <acelyc1112009@gmail.com>
3 files changed