*: handle manifests with multiple resources

[ericchiang]

Closes #4

[idcmp]

Is there a blocker with merging this PR?

[tustvold]

I'm currently working on an MR that makes you specify the name and namespace in the terraform code, and overrides the contents of the yml file to match. This is so that it can enforce ForceNew and prevent leaking the old resource. I don't know how people feel about this, it may be outside the scope of what this provider wants to do, but it seems problematic that as it stands this provider can leak resources.

It would be complex unify these two MRs...