Zun was misconfigured and defaulted to using public endpoints
which are likely inaccessible from the internal network.
This patch fixes that and removes unused and deprecated
options. Validity of options confirmed from Queens to Train
against respective docs.
Change-Id: I25cc8792351c43eb9ff45465e49fa72ceccd6cb5
Closes-bug: #1840572
Signed-off-by: Radosław Piliszek <radoslaw.piliszek@gmail.com>
(cherry picked from commit b693746cb0bbe2ea382cb6fbd620f83045ed3295)
c0a2c72b29