Tag bundle image with current commit sha

[shivakunv]

Currently, the GPU Operator image configured in the bundle is ghcr.io/nvidia/gpu-operator:main-latest (see here). This can be problematic for two reasons. First, it is difficult to deduce which commit SHA the operator image / OLM bundle was built from. Therefore, it is difficult to infer which commit SHA introduced a test failure. Second, the gpu-operator deployment runs with imagePullPolicy=IfNotPresent by default. This means if the gpu-operator image (with the main-latest) tag is already cached on the node, the latest image may not be pulled / tested. To address these shortcomings, we should generate an OLM bundle that is using SHA-tagged images of gpu-operator.
We should update the GitHub Actions job that builds + pushes an OLM bundle image as follows:

1. Before building the bundle image, it should update all gpu-operator image tags in the CSV file to refer to the commit SHA. E.g. ghcr.io/nvidia/gpu-operator:commit-short-sha
2. When pushing the OLM bundle image, we should push two tags – one tag will be main-latest and the other will be commit-short-sha

[coveralls]

coverage: 23.552%. remained the same
when pulling 9811ba4 on bundlecommitsha
into 4011723 on main.

[shivakunv]

passed pipeline:

https://github.com/NVIDIA/gpu-operator/actions/runs/19452460548

[shivakunv]

PTAL @cdesiniotis @tariq1890

[shivakunv]

@rajathagasthya : PTAL

[shivakunv]

passed pipeline : https://github.com/NVIDIA/gpu-operator/actions/runs/20061702250

[shivakunv]

passed pipeline: https://github.com/NVIDIA/gpu-operator/actions/runs/20156772775/job/57861546344

resolved

[shivakunv]

Thanks @rajathagasthya
PTAL @tariq1890 @cdesiniotis

resolved