The Go application sample should use `github.com/microsoft/go-mssqldb`

[shueybubbles]

This issue is for a: (mark with an x)

- [x ] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

n/a

Any log messages given by the failure

n/a

Expected/desired behavior

The Go application sample should use github.com/microsoft/go-mssqldb driver now, which is our officially supported driver.

OS and Version?

Any

Versions

Mention any other details that might be useful

@akatesmith