This adds a new method that will return the output from a specified
command that has already been excuted by the CommandRunner. The new
method, get_command takes a single argument which is the full name
of the command to retrieve.
* add new module network
* move EOS to NetworkModule
* shell.py Python 3.x compatibility
* implements the Command class through the connection for eos
This implements a new Command class that specifies the cli command
and output format. This removes the need to batch commands through
the connection
* initial add of netcmd module
