As canceling of stage request implemented as DELETE, files that still in
the flush queue doesn't 'exist' in catalog.

Ren Bauer authored Nov 30, 2021 and Tigran Mkrtchyan committed Feb 03, 2022

(cherry picked from commit 77bc79e6)

- fix the config/log file locations
- remove some obsolete config options
- describe TpConfigPath and BufferCount

The DiskReadTask task issues DiskFile::size to validate the file size.
As Xroot protocol always return the StatInfo on open and as tape files
are immutable (even if not files are not locked, this calling stat and
then read doesn't guarantee that file is not changed), there are no
needs to enforce the xroot client to ignore stat cache.

the CTA service is independent from gRPC, thus we want to decouple them
from each other.

cta-dcache: use StdoutLogger in simple mode