This is part of the 2.2 refactor to extract the Cli class into a
separate module. This renames netcmd to netcli which is consistent
with the network shared modules implementations
This restructure moves the Cli object to netcmd and includes a roll up
of inor bugfix updates to CommandRunner
* CommandRunner now only allows one instance of a command in the stack and
raise an exception if a duplidate command is detected
* CommandRunner now caches returns based on command and output
* CommandRunner is not responsible for creating Command instances
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
