temporarily skip memcached tests

For some reason, memcached docker images are not able to start up anymore inside github actions.

From the logs:

______ ERROR at setup of test_cache_uses_memcached_driver_when_configured ______
Traceback (most recent call last):
  File "/home/runner/work/guillotina/guillotina/guillotina/tests/fixtures.py", line 643, in memcached_container
    host, port = pytest_docker_fixtures.memcached_image.run()
  File "/opt/hostedtoolcache/Python/3.7.9/x64/lib/python3.7/site-packages/pytest_docker_fixtures/containers/_base.py", line 106, in run
    f'Could not start {self.name}: {logs}\n'
Exception: Could not start memcached: 
Image: memcached:1.6.7
Options:
{'cap_add': ['IPC_LOCK'],
 'detach': True,
 'environment': {},
 'mem_limit': '1g',
 'privileged': True,
 'publish_all_ports': True}

Any ideas why?

Will add back once that is addressed.

plone / guillotina

temporarily skip memcached tests #1102