[CLA] signature for osarrat

Closes #23113

doc/cla/individual/osarrat.md

+France, 2018-02-16
+
+I hereby agree to the terms of the Odoo Individual Contributor License
+Agreement v1.0.
+
+I declare that I am authorized and able to make this agreement and sign this
+declaration.
+
+Signed,
+
+Olivier Sarrat olivier.sarrat@laposte.net https://github.com/osarrat