Correct RepositoryURI schema and propagate adjust exit code correctly

Summary:
Fixes T10830.

• The return code from storage adjust did not propagate correct.
• There was one column issue which I missed the first time around because I had a bunch of unrelated stuff locally.

Test Plan:

• Ran bin/storage upgrade -f with failures, used echo $? to make sure it exited nonzero.
• Got fully clean bin/storage adjust by dropping all my extra local tables.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10830

Differential Revision: https://secure.phabricator.com/D15746