Updated Helpers.AugustaOrGreater function to use Augusta platform version

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
Updated ApplyLicenseEdition action to use the correct version of Host.apply_edition depending on host's version.

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>