[10.0]Oauth better decoding of Oauth provider response

[flotho]

Description of the issue/feature this PR addresses:

• When using other provider than those natively defined like ApereoCas https://apereo.github.io/cas/5.2.x/installation/OAuth-OpenId-Authentication.html,

Current behavior before PR:

• Response kw['state'] is presented in a non decoded json :
  unicode: %7B%22p%22%3A 4%2C %22r%22%3A %22http%253A%252F%252Flocalhost%253A8069%252Fweb%22%2C %22d%22%3A %22mag_prod10_2018_01_12%22%7D

Desired behavior after PR is merged:

• Interpret the kw['state'] correctly

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[flotho]

Hi @pedrobaeza ,
Any comment or review on this would be appreciated.
Actually the travis failure seems weird to me and mostly not related to my PR.
regards

[pedrobaeza]

You need to make the same PR to Odoo first and link it here.

[flotho]

Hi @pedrobaeza ,

Do I have to restart from a brand new fork of Odoo or wil the OCB be able to be merge into Odoo ?

[pedrobaeza]

You need a new one forked from odoo/odoo and cherry-pick this commit.

[flotho]

Ok, finally I think that it's mostly an apereo issue and declared a bug there : https://groups.google.com/a/apereo.org/forum/?utm_medium=email&utm_source=footer#!topic/cas-user/Lo441ONXa4Y
So I'm gonna patch this via a custom module until apereo told me if it's a bug from their part.

regards