csauoss

Results 2 issues of csauoss

**What this PR does / why we need it**: - This PR adds support for new flag `--kubelet-certificate-authority-text` to allow passing CA as text for kubelet client. Added corresponding unit...

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This pr addresses issue [710](https://github.com/NVIDIA/gpu-operator/issues/710) to allow passing custom labels for gpu-operator's ServiceMonitor.