When the authz response buffer limit is hit, perform a flush.
This prevents excessive buffer sizes, especially on large responses
(e.g. `/containers/<id>/archive` or `/containers/<id>/export`).
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit 74f8e47352e71aad4015d8d9dea8f16e7a055863)
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>