Add method to fetch provider content

[glenthomas]

Introduction

I am writing a rule to check aws provider configuration. Specifically, I would like to assert that aws providers have certain default_tags values set.

The runner interface has a GetResourceContent to make it easier to get resources (without using GetModuleContent). I would appreciate a function that gets the providers within the module.

Proposal

type Runner interface {
    GetProviderContent(providerName string, schema *hclext.BodySchema, option *GetModuleContentOption) (*hclext.BodyContent, error)
...
}

References