Sweeper '-sweep-run' flag to use regexp match when filtering sweepers to run

[ewbankkit]

SDK version

$ go mod edit -json | jq '.Require[] | select(.Path=="github.com/hashicorp/terraform-plugin-sdk")'
{
  "Path": "github.com/hashicorp/terraform-plugin-sdk",
  "Version": "v1.4.0"
}

Use-cases

When running something like

$ TEST=./aws SWEEP=us-west-2 SWEEPARGS=-sweep-run=aws_xxx make sweep

the sweeper for resources like aws_xxx_attachment are run even if they are not declared as dependencies of aws_xxx.
This is because filterSweepers() uses strings.Contains() on the sweeper name to determine if it should be run.
Changing this to a regexp match would allow exact matches (^aws_xxx$) as well as being backwards compatible.

[bflad]

With the introduction of the terraform-plugin-testing module (migration guide), we are transferring feature requests relating to the helper/resource "testing framework" in the terraform-plugin-sdk repository over to the new terraform-plugin-testing repository.

[SarahFrench]

I'd be happy to open a PR for this- I ran into this issue yesterday and would prefer a strict match instead of Contains

[austinvalle]

One thing to consider if you look to open a PR (definitely welcome 🙂) is how to handle potential commas in regex statements, since -sweep-run is a comma separated list. We could also consider a new complimentary -sweep-run-regex flag if we want to avoid that problem.