[pre-commit]Add shared kuttl pre-commit rules

[gibizer]

This pre-commit check ensures that no TestAsserts are defined in our kuttl tests that are ignored by kuttl.

This can be then used in the service operators by adding the following to the .pre-commit-config.yaml

- repo: https://github.com/openstack-k8s-operators/openstack-k8s-operators-ci
  hooks:
    - id: kuttl-single-test-assert

[viroel]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gibizer, rebtoor, viroel

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