`grafana-cli` uses the third-party library to define the flags and not
the standard library. Using `flag.Parse` conflicts with the defined
flags from our third-party library.

In the case where `flag.Parse` is used, the CLI assumes that definitions
provided are not needed and will not define them; producing errors of
the kind `flag provided but not defined --example-flag`.

Using the context to read any arguments (including flags) is the
recommended approach by the third-party library.