Helm uninstall leaves px-operator namespace in (stuck) terminating state

[ddelnano]

Describe the bug
The helm install process followed by a helm uninstall does not fully clean up all pixie resources in the v0.1.7 operator release. The OLM project added a csv-cleanup finalizer in v0.27.0 that causes the px-operator to get stuck in a terminating state.

To Reproduce
Steps to reproduce the behavior:

1. Install pixie via the helm install instructions
2. helm -n pl uninstall pixie
3. Notice that the px-operator is stuck in a terminating state due to the operators.coreos.com/csv-cleanup finalizer

Expected behavior
Helm uninstall cleans up the olm, px-operator and pl namespaces.

Logs
I don't have the logs handy, but I will attach them to this issue when I trigger the problem again.

[ddelnano]

As a short term workaround, if OLM is installed prior to using the Pixie helm chart, the issue does not occur. This is because OLM won't be a part of the helm installation, which allows the px-operator finalizers defined within OLM to run successfully on helm uninstall.

I'm evaluating options for addressing this finalizer issue in the meantime.