DISPATCH-56: qdmanage: command line AMQP management tool.

qdmanage is a general purpose, command-line AMQP management tool supporting
create, read, update, delete and query operations.  Management entity attributes
are output in JSON format, which is human-readable and machine parsable. It is
suitable for debugging, testing and scripting in languages other than python.
Bulk create and update operations are supported by piping JSON entity attributes
to stdin.

qdmanage is a fairly thin layer over the python qpid_dispatch.management
library.  For scripting in python use the qpid_dispatch.management library
directly.

qdmanage does not replace qdstat. qdstat is a dispatch-specific tool providing
convenient access to the most-often used router information in a convenient,
readable format designed for human consumption.

NOTE: The qdrouterd management interface is still split into two.
qdmanage uses the standard interface "$management" by default.
To access the new management interface with qdmanage:

  qdmanage <command> -b host:port/$management2

The two management interfaces will be combined in the near future.

git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1625117 13f79535-47bb-0310-9956-ffa450edef68