Add FAQ and README with default credentials information

Author: dgarros

FAQ.md

@@ -18,6 +18,10 @@
 # }
 ```
 
+## How can I update the default credentials used to connect to a device ?
+
+> By default, the plugin is using the credentials defined in the main `configuration.py` for Napalm (`NAPALM_USERNAME`/`NAPALM_PASSWORD`). You can update the default credentials in `configuration.py` or you can provide specific one for each onboarding task.
+
 ## Does this plugin support the discovery and the creation of all interfaces and IP Addresses ?
 
 > **No**, The plugin will only discover and create the management interface and the management IP address. Importing all interfaces and IP addresses is a much larger problem that requires more preparation. This is out of scope of this project.

README.md

@@ -53,6 +53,8 @@ A new device can be onboarded via :
 
 During a successful onboarding process, a new device will be created in NetBox with its management interface and its primary IP assigned. The management interface will be discovered on the device based on the IP address provided.
 
+> By default, the plugin is using the credentials defined in the main `configuration.py` for Napalm (`NAPALM_USERNAME`/`NAPALM_PASSWORD`). It's possible to define specific credentials for each onboarding task.
+
 ### Consult the status of onboarding tasks
 
 The status of the onboarding process for each device is maintained is a dedicated table in NetBox and can be retrived :