Update from master part 2

Squashed commit of the following:

commit b91fc76e
Author: Gabriel Cuba <gcuba@whitestack.com>
Date:   Fri May 19 18:30:19 2023 -0500

    Feature 10972: Add tests for volume multiattach

    Change-Id: Ib7c918cd8d3a160cfeb69503e10b135893be244b
Signed-off-by: Gabriel Cuba <gcuba@whitestack.com>

commit 6373cc95
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Tue May 23 11:17:09 2023 +0200

    Avoid execution of tests in run_test.sh if no tag is provided

    The idea of this commit is to enable the use of run_test.sh for
    other purposes like running TST010 conformance tests or register VIM
    and K8s clusters, so that the VIM and cluster registration can be
    decoupled. In that way, daily jobs could run several tests, one after
    the other, with different VIMs.

    Change-Id: If0791f9562d23a861f8491c144cdc7f539efec46
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit 437637ce
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Tue May 23 11:31:29 2023 +0200

    Updated README with cleaner instructions

    Change-Id: Iac797372e88e71afb1322e2bd0e71feba4535f21
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit 8f994ccf
Author: Gabriel Cuba <gcuba@whitestack.com>
Date:   Fri May 12 13:44:16 2023 -0500

    Feature 10975: Modify heal_02 to test instantiation, scaling and healing using an existing flavor-id

    Change-Id: Ic9c02b13dda5c2e8eac3b8bfe027bd858d49a367
Signed-off-by: Gabriel Cuba <gcuba@whitestack.com>

commit 245b04f0
Author: Gabriel Cuba <gcuba@whitestack.com>
Date:   Tue May 9 12:37:29 2023 -0500

    Feature 10978: add tests for ipv6 profiles in vnfd and nsd

    Change-Id: If62b1489249fe4135a14b9c2720573ba8fe1a5c1
Signed-off-by: Gabriel Cuba <gcuba@whitestack.com>

commit 541f9cf2
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Tue May 23 11:59:47 2023 +0200

    Fix Fail01 to get openstack quota properly after updating client version

    Change-Id: Ief7b4d5f150d67cecf944021c2598456672a30e0
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit a86e6938
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Fri May 19 12:47:09 2023 +0200

    Update SA02 to take into account the VNF threshold-time

    Change-Id: Idde7fa330e8e9b141053c15edb266817c4e699c6
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit c753f67c
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Thu May 18 15:06:49 2023 +0200

    Fix error message in run_test.sh for create_k8scluster

    Change-Id: Ice2e0bc5e829e31a81cbde30ea6784de64d8ca63
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit b9dfe031
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Wed May 10 17:25:47 2023 +0200

    Support of Python3.10

    This change includes required changes to make tests work in Python3.10.
    It also enables tox running as part of stage-test, which was not included before.
    For the moment, only flake8 and black envs will be checked. Some pylint
    errors have been fixed, but a few remain unsolved. That's why pylint is
    run, but its result is ignored.

    Change-Id: I29105bf849eab8b47f92627a7eea1ede31b8e05b
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit 3d7579cc
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Tue Apr 18 15:04:57 2023 +0200

    Clean stage-archive.sh and use allowlist_extenals in tox.ini

    Change-Id: I690598c770f52d805ee3516fead7fa191c90205f
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

commit 43f34481
Author: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date:   Thu Feb 23 17:37:47 2023 +0100

    Fix bug 2220 to solve sol003_01 test

    Change-Id: Ic4376067a8b42e470c09ba0668c545db8ce08e55
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

Change-Id: Ide1e04dc7598e80885c2d504da8b89fb4a2f902f
Signed-off-by: Dario Faccin <dario.faccin@canonical.com>