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...>