Minor code updates from missed open comments from #36 to the migratedown feature · infobloxopen/migrate@7fda79e

Error return value of `viper.BindPFlags` is not checked (errcheck)

const `defaultDatabaseDSN` is unused (unused)

const `defaultDatabaseDriver` is unused (unused)

const `defaultDatabaseAddress` is unused (unused)

const `defaultDatabaseName` is unused (unused)

const `defaultDatabaseUser` is unused (unused)

const `defaultDatabasePassword` is unused (unused)

const `defaultDatabaseSSL` is unused (unused)

const `defaultConfigDirectory` is unused (unused)

var `flagHelp` is unused (unused)

Restore cache failed: Dependencies file is not found in /home/runner/work/migrate/migrate. Supported file pattern: go.sum

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