[CLA] signature for Liujianyun

Closes #14251

doc/cla/individual/liujianyun.md

+China, 2016-10-12
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+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,
+
+Liu Jianyun lnkdel@gmail.com https://github.com/lnkdel