Ensure compatibility with kubernetes.core >=3.10,<4.1.0 by replacing
deprecated imports of HAS_K8S_MODULE_HELPER and k8s_import_exception.
Signed-off-by: Felix Matouschek <fmatouschek@redhat.com>
Bump the dependency on kubernetes.core to versions >=3.0.1 and remove
the workaround introduced by 4429ac8c03.
Signed-off-by: Felix Matouschek <fmatouschek@redhat.com>
This adds yamllint to the CI linter job and sets the maximum line
length to 140 like in kubevirt/kubevirt.
Signed-off-by: Felix Matouschek <fmatouschek@redhat.com>