CI: Move to Ubuntu 24.04 'Noble' as the base

CI: Move to Ubuntu 24.04 'Noble' as the base

The changes here are that we need to ensure python setuptools are
in our build virtual environments as they will no longer come in via
python even in a virtual environment. As part of this ensure setuptools
is in our cache and also include pytest-azurepipelines as we should have
been doing. Next, we move away from using apt-key directly and move that
stanza towards the rest of the apt work.  This also lets us drop
directly installing gnupg2. These steps are not strictly required for
24.04 but will be for later releases and are valid now. Finally, we drop
the unused PTYHONPATH ENV line.

In order to use these containers however, we need to stop running the
event_dump test as the 'addr2line' tool provided by binutils no longer
is able to decode those specific events in most cases. As this is a
problem with binutils and present for some time now, disabling the test
until someone has time to work with upstream this seems reasonable.

Signed-off-by: Tom Rini <trini@konsulko.com>