Added vhost option for Hapi

[robinvdvleuten]

Hi there!

I've added the option to add a vhost to the endpoint, as it should be allowed by Hapi route configuration.

TODO:

• Update CHANGELOG.md with your change (include reference to issue & this PR)
• Make sure all of the significant new logic is covered by tests
• Rebase your changes on master so that they can be merged easily
• Make sure all tests and linter rules pass

[rmoura-92]

any way to add this for express package? thanks