Raise TOO_MANY_REQUESTS on login RateLimitException

When using trytond HTTP API with auth_required, if there is a RateLimitException raise, it returns a 500. It will be more useful to return a 429 which has better meaning.

assigned to @ced

added trytond type::feature + 1 deleted label

added 1 deleted label and removed 1 deleted label

review47751002 updated at https://codereview.tryton.org/47751002/#ps1

New changeset 7c73ae565b76 by Cédric Krier in branch 'default':
Return 429 TOO MANY REQUESTS on RateLimitException
https://hg.tryton.org/trytond/rev/7c73ae565b76

added 1 deleted label and removed 1 deleted label

closed

New changeset 065cdb6a57f0 by Cédric Krier in branch 'default':
Return 429 TOO MANY REQUESTS on RateLimitException
https://hg.tryton.org/tryton-env/rev/065cdb6a57f0