Update deprecation message.
Update deprecation message.

[#179348876](https://www.pivotaltracker.com/story/show/179348876)

Co-authored-by: Andrew Garner <b1cc5a52f259b42a8a7515d029542619be3a2eea@vmware.com>
Co-authored-by: Colin Shield <3b540b09c1b573461679c4d99d40617736cd25d6@vmware.com>

cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release