* Update php client with OAS3
* Fix content type
the endpoint consumes 'application/x-www-form-urlencoded'
* Regenerate php client from OAS3
* Update the test case according to the fix on spec
Co-authored-by: Akihito Nakano <sora.akatsuki@gmail.com>
Co-authored-by: Jeremie Bresson <dev@jmini.fr>
Co-authored-by: Jim Schubert <james.schubert@gmail.com>
Co-authored-by: Martin Delille <martin@phonations.com>
Co-authored-by: Tomasz Prus <tomasz.prus@gmail.com>
Co-authored-by: William Cheng <wing328hk@gmail.com>