Integrate hil cli

[saacg]

(@portante I forgot to squash the commits before pushing to my origin, and then could no longer squash them. Is there a way to just make a pull request for the final commit, or squash them before merging? )

Note: If cloning branch to test, must have HIL api server and HIL network server running for the HilInventoryDriver to work)

modify hil-specific methods from hil/haas/cli.py (adapted by @vsemp) into
private helper methods in the HilInventoryDriver in order to provide a
simplifying layer of abstraction to make the code more readable and developer
friendly, while keeping all hil-specific actions encapsulated within the scope
of the hil-specific drivers. Remove hil dependencies from the rest call wrappers,
url creater, and status code checker and add them as class methods to the Quads
object in libquads. The methods were primarily inventory related and are
therefore placed in the HilInventoryDriver class. The HilNetworkDriver class
can access the inventory information it needs through use of a HilInventoryDriver
instance

The following changes were made to the following files:

- lib/hardware_services/inventory_drivers/HilInventoryDriver.py:
    - implement new private methods:
        - __list_projects
        - __project_create_network
        - __project_connect_node
        - __project_detach_node
        - __network_delete
        - __project_create
        - __project_delete
        - __list_nodes
        - __show_node
        - __node_connect_network
        - __node_detach_network

    - refactor existing public methods to use new private methods:
        - update_cloud
        - update_host
        - remove_cloud
        - remove_host
        - list_clouds
        - list_hosts

- lib/libquads.py:
    - add class methods to wrap rest calls:
        - quads_urlify
        - quads_status_code_check
        - quads_put
        - quads_post
        - quads_get
        - quads_delete

    - add new member variable for api server url:
        - hardware_service_url

- conf/quads.yml:
    - add hardware_service_url parameter in config file
        so it can be easily expanded to use other APIs than HIL

- bin/quads.py
    - add defaulthardwareserviceurl variable set to new config parameter
    - add --set-hardware-service-url command line option to set parameter
        dynamically

[vsemp]

Generally, looks fine. You can merge it.

But try not to use **kwargs when the arguments are known upfront in the future.

[portante]

Merged via #56.