## Description
* Replace the CatalogSource approach to install the OperatorHub.io catalog by a more simple & straightforward way to install NMState
* Improve logging
* Add report summarizing the host network configuration that was applied (which host, bonds, port-channels)
* Fix command to find next available port channel id
## Extra info
Using the `apply_url` approach to install the NMState operator isn't the best approach: it's harder to maintain and upgrade. But it helps us achieve waht we wanted for now: install the NMState Operator to configure bonds on a host.
The preferred approach, installing an operator from the OperatorHub.io catalog, didn't work for now. We had a timeout error with DeadlineExceeded probably caused by an insufficient CPU/Memory allocation to query such a big catalog, even though we tweaked the RAM allocation (we couldn't find a way to do it for CPU).
Spent too much time on this so we stopped these efforts for now. It would be good to get back to it when we need to install something else from a custom catalog.
Reviewed-on: https://git.nationtech.io/NationTech/harmony/pulls/175
* Expose a high-level `brocade::init()` function to connect to a Brocade switch and automatically pick the best implementation based on its OS and version
* Implement a client for Brocade switches running on Network Operating System (NOS)
* Implement a client for older Brocade switches running on FastIron (partial implementation)
The architecture for the library is based on 3 layers:
1. The `BrocadeClient` trait to describe the available capabilities to
interact with a Brocade switch. It is partly opinionated in order to
offer higher level features to group multiple commands into a single
function (e.g. create a port channel). Its implementations are
basically just the commands to run on the switch and the functions to
parse the output.
2. The `BrocadeShell` struct to make it easier to authenticate, send commands, and interact with the switch.
3. The `ssh` module to actually connect to the switch over SSH and execute the commands.
With time, we will add support for more Brocade switches and their various OS/versions. If needed, shared behavior could be extracted into a separate module to make it easier to add new implementations.
