Deprecating body and replacing with response_body

[orgads]

Cherry picked from hashicorp/terraform-provider-http#137.

Fixes #10.

[salrashid123]

thatnks for the PR.

Couple of changes to the test cases. The terraform that a testcase exercises must have a corresponding line of code that checks for it.

you can run the tests using make tests

terraform-provider-http-full$ make test
==> Checking that code complies with gofmt requirements...
go test -i $(go list ./...) || exit 1
go: -i flag is deprecated
echo $(go list ./...) | \
	xargs -t -n4 go test  -timeout=30s -parallel=4
go test '-timeout=30s' '-parallel=4' github.com/salrashid123/terraform-provider-http-full github.com/salrashid123/terraform-provider-http-full/internal/provider
?   	github.com/salrashid123/terraform-provider-http-full	[no test files]
ok  	github.com/salrashid123/terraform-provider-http-full/internal/provider	6.118s

[orgads]

Thank you. The tests pass now.

[salrashid123]

thanks, this and the PRs 12,13 included in

terraform {
  required_providers {
    http-full = {
      source = "salrashid123/http-full"
            version = "1.3.1"
    }
  }
}