Custome certificate for s3 cache
Please make this option from the gitlab runner helm chart available to the operator https://gitlab.com/gitlab-org/charts/gitlab-runner/-/blob/main/values.yaml#L77-L82
## Set the certsSecretName in order to pass custom certficates for GitLab Runner to use
## Provide resource name for a Kubernetes Secret Object in the same namespace,
## this is used to populate the /home/gitlab-runner/.gitlab-runner/certs/ directory
## ref: https://docs.gitlab.com/runner/configuration/tls-self-signed.html#supported-options-for-self-signed-certificates
##
# certsSecretName: