Change-Id: I744a8db08dea32d0dd6293d8a460564e84edde29

Update the URL to the upper-constraints file to point to the redirect
rule on releases.openstack.org so that anyone working on this branch
will switch to the correct upper-constraints list automatically when
the requirements repository branches.

Until the requirements repository has as stable/2023.1 branch, tests will
continue to use the upper-constraints list on master.

Change-Id: I414c80d965d9c1d5819b32432d3620d15965c78c

Since REMOTE SERVICE INTERFACE has default value to 'public',
it doesn't make sense to have validation for the same.

Removing this validation and added few missing tests for
glance-download import method

Conflicts:
     glanceclient/tests/unit/v2/test_shell_v2.py

NOTE: Resolved conflicts caused due to I1d8c69acd5d61fdc426469cd87d1ace81871e60f

Closes-Bug: #2051761
Change-Id: I89adf23aac5db4f2c46379546def2f71d7c8e163
(cherry picked from commit 3c5dd23)
(cherry picked from commit d739d31)

The chunk size used for downloading images was 64KiB for some time. That
is okay for relatively small images but the client side of CPU can be a
bottleneck especially for large images. Bump the default chunk size from
64KiB to 1MiB so we can use the client side CPU more efficiently.

[64KiB chunk size - current]
INFO cinder.image.image_utils Image download 1907.35 MB at 68.61 MB/s
-> ~ 549 Mbps

[1MiB chunk size - patched]
INFO cinder.image.image_utils Image download 1907.35 MB at 132.10 MB/s
-> 1,057 Mbps

Closes-Bug: #2020139
Change-Id: I8b6e19621fc989526b02319d88fcfde88a17eee0
(cherry picked from commit 7d78cc4)

Change-Id: I1dc3134a839504583b58ccaf97f3275d9a2e020e