[Backport - Newton] Switch keystone UUID to Fernet #1780
Merged
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Old UUID tonken would consume space of DB and cause authentication
slow when heavy traffic access DB. Fernet tokens use shared
private keys to avoid having to store or replicate tokens in your
DB. This change will make authentication super fast and big plus
for keystone. And it's already in upstream.
(cherry picked from commit ea4f14b)
Connects https://github.com/rcbops/u-suk-dev/issues/134