Adding upstream version 1.3.1+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

docs/labs/README.md

@@ -0,0 +1,67 @@
+# cvprac labs
+
+The following lab examples will walk through the most commonly used REST API calls using cvprac
+to help users interact with Arista CloudVision easily and automate the provisioning of network devices.
+
+## Table of Contents
+
+1. [Authentication](#authentication)
+    - [Password Authentication](#password-authentication)
+    - [Service Account Token Authentication](#service-account-token-authentication)
+1. [Known Limitations](#known-limitations)
+
+## Authentication
+
+There are two ways to authenticate using the REST APIs:
+
+- user/password (on-prem only)
+- service account token (available on CVP 2020.3.0+ and CVaaS)
+
+### Password Authentication
+
+```python
+from cvprac.cvp_client import CvpClient
+clnt = CvpClient()
+clnt.connect(['10.83.13.33'],'cvpadmin', 'arastra')
+```
+
+### Service Account Token Authentication
+
+To access the CloudVision as-a-Service and send API requests, "Service Account Token" is needed.
+After obtaining the service account token, it can be used for authentication when sending API requests.
+
+Service accounts can be created from the Settings page where a service token can be generated as seen below:
+
+![serviceaccount1](./static/serviceaccount1.png)
+![serviceaccount2](./static/serviceaccount2.png)
+![serviceaccount3](./static/serviceaccount3.png)
+
+The token should be copied and saved to a file that can later be referred to.
+
+```python
+from cvprac.cvp_client import CvpClient
+clnt = CvpClient()
+with open("token.tok") as f:
+    token = f.read().strip('\n')
+clnt.connect(nodes=['www.arista.io'], username='', password='', is_cvaas=True, api_token=token)
+```
+
+>NOTE In case of CVaaS the `is_cvaas` parameters has to be set to `True`
+
+Service accounts are supported on CVP on-prem starting from `2020.3.0`. More details in the [TOI](https://eos.arista.com/toi/cvp-2020-3-0/service-accounts/) and the [CV config guide](https://www.arista.com/en/cg-cv/cv-service-accounts).
+
+```python
+from cvprac.cvp_client import CvpClient
+
+with open("token.tok") as f:
+    token = f.read().strip('\n')
+
+clnt = CvpClient()
+clnt.connect(nodes=['10.83.13.33'], username='',password='',api_token=token)
+```
+
+## Known Limitations
+
+- for any APIs that interact with EOS devices, the service account name must match the name of the username
+  configured on EOS and CVP
+- Support for REST API bindings for the Resource APIs (Lab 8) was added in CVP 2021.1.0