add info about domain in log about "Could not find user"

[AlvaroVega]

2023-04-17 10:48:43.284847 2023-04-17 10:48:43.284 148 WARNING keystone.auth.plugins.core [req-739e4d45-6fde-459d-b944-c0ec7c686fa2 - - - - -] Could not find user: XXXXXX.: UserNotFound: Could not find user: XXXXXX.\x1b[00m

[AlvaroVega]

Exception message
https://github.com/openstack/keystone/blob/f5db9801c23bde15d162a67d4fd6621e5bd09719/keystone/exception.py#L469-L470

Started by
https://github.com/openstack/keystone/blob/f5db9801c23bde15d162a67d4fd6621e5bd09719/keystone/auth/core.py#L222-L255

which calls to get_user_by_name:
https://github.com/openstack/keystone/blob/f5db9801c23bde15d162a67d4fd6621e5bd09719/keystone/identity/backends/sql.py#L202-L212

which raise the exception UserNotFound