Add check_voip

Signed-off-by: Julien Riou <julien@riou.xyz>

README.md

@@ -0,0 +1,36 @@
+# OVHcloud Nagios collection
+
+Nagios checks for [OVHcloud](https://www.ovhcloud.com) services.
+
+# Installation
+
+Using pip:
+
+```
+python3 -m venv venv
+. ./venv/bin/activate
+pip install -r requirements.txt
+```
+
+Create OVHcloud API tokens following [this guide](https://github.com/ovh/python-ovh).
+
+# check_voip
+
+For each VoIP lines associated to the account, detect the last registration time:
+
+```
+./check_voip --help
+```
+
+Example of configuration:
+
+```
+command[check_voip]=/opt/check_ovhcloud/check_voip -w 7200 -c 86400
+```
+
+# Contributing
+
+```
+pip install pre-commit
+pre-commit run --files check_*
+```