General cleanup

What does this MR do?

7256e35f - Remove unused secret object

• registry-storage-v2 is no longer used and hasn't been for a few weeks
• Let's remove it from our infrastructure

ea751e01 - Fix tracing URL for staging

• A bug in the way helm creates a template allowed staging to be populating this environment variable as empty
• A recent helm chart exposed this bug, and we discovered that it wasn't set in the first place 😲
• This commit places the tracing URL into the correct location for staging to actually utilize this desired configuration

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Please do not squash upon merge.

Author Check-list

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

• Assign to the correct reviewer per the contributing document
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• 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