[FIX] google_drive: Use 'get' instead of 'post' in 'copy_doc'
[FIX] google_drive: Use 'get' instead of 'post' in 'copy_doc'

Purpose
=======

This chunk of code was badly converted in P3 on https://github.com/odoo/odoo/commit/01e35141479b8dfc4a390518f89fc52e7cec5396#diff-6ad3d62d2147f2fef519473f2576b459R94

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo