Fix download job when dir not exist
What does this MR do and why?
Describe in detail what your merge request does and why.
There would be case where pipelines have been green for a while in the environment and so that environment's directory wouldn't exist in GCP. Handling that case here.
Example failed job https://ops.gitlab.net/gitlab-org/quality/staging/-/jobs/6692212
MR acceptance checklist
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I have evaluated the MR acceptance checklist for this MR.