* create upsert query for check-in method
* add tests
* fix lint err
* add benchmark test for db query
* fix lint and tests
* add a unit test, fix lint
* add address to tests
* replace print w/ b.Fatal
* refactor query per CR comments
* fix disqualified, only set if null
* fix query
* add version to updatecheckin query
* fix version
* fix tests
* change version for tests
* add version to tests
* add IP, add transport, mv unit test
* use node.address as arg
* add last ip
* fix lint
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