Set the connection timeout when using Go

Configure a connection timeout when connecting to Cloud SQL for MySQL by using Go's database/sql package.

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For detailed documentation that includes this code sample, see the following:

To authenticate to Cloud SQL for MySQL, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

// Set Maximum time (in seconds) that a connection can remain open.
db.SetConnMaxLifetime(1800 * time.Second)

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