Extend support for Custom CA to parquet service

[flamarion]

Add support for Custom CA certs to Parquet.
Currently, only the W&B app has the support.

Probably a “copy and paste” from

https://github.com/wandb/helm-charts/blob/main/charts/operator-wandb/charts/app/templates/_deployment.tpl#L293-L297

https://github.com/wandb/helm-charts/blob/main/charts/operator-wandb/charts/app/templates/_deployment.tpl#L76-L80

https://github.com/wandb/helm-charts/blob/main/charts/operator-wandb/charts/app/templates/configmap.yaml

[amanpruthi]

#254