Root cause found. Previous placement client request payload with content-type "text/*", and keystoneauth1 process it correctly.
And this bug report duplicated 'https://bugs.launchpad.net/neutron/+bug/1828543'. Master was fixed but other release are affrected.
Root cause found. Previous placement client request payload with content-type "text/*", and keystoneauth1 process it correctly.
And this bug report duplicated 'https:/ /bugs.launchpad .net/neutron/ +bug/1828543'. Master was fixed but other release are affrected.