Fix tracing URL duplicate env variable

What does this MR do?

• Our helm chart is supposed to configure this for us
• Since we are setting this manually, we are running into a bug with helm and Kubernetes
  • Future environment variable adds are failing
  • Kubernetes will reject duplicate variable configurations
• We only do this for staging, so no change is necessary for other environments

Because this is not deployment specific, this ends up applied to all deployments that our helm chart manage for this configuraiton.

Author Check-list

Please read the Contributing document and once you do, complete the following:

• Assign to the correct reviewer per the contributing document
• Apply the correct metadata per the contributing document
• Link to related MRs for applying the changes on other environments
• Link to related Chef changes
• If necessary link to a Criticality 4 Change Request issue

Reviewer Check-list

• Reviewed the diff jobs to confirm changes are as expected
• No changes shown in the diffs not associated with this MR - This may require a rebase or further investigation