Add support for the `deletedWith` resource option

[justinvp]

This adds support for the deletedWith resource option that has recently been added to the Node.js, Python, .NET, and Go SDKs.

In many cases there is no need to deleted resources if the container resource is going to be deleted as well.

A few examples:

• Database object (roles, tables) when database is being deleted
• Cloud IAM bindings when user itself is being deleted

This helps with:

• Speeding the deletion process
• Removing unnecessary calls to providers
• Avoiding failed deletions when the pulumi user running the plan has access to the container resource but not the contained ones

To avoid deleting contained resources, set the deletedWith resource option to the container resource.

Fixes #432

[aq17]

@justinvp I added a small commit and associated PR in pu/pu that should allow the option to be passed on pulumi convert