This requires an update of the endpoint but is necessary to be able
to use public-readable containers (like temporary URLs) with RGW.
Change-Id: I6bd11bdf9c74db24c0d21fa600030e9f3b144df0
Closes-Bug: 1826894
(cherry picked from commit 7c379543ccab831da0bf4f8f4b850b534d5c5247)