fix(bindplane_configuration): Lack of rollout options should not cause a change during apply

[jsirianni]

Description of Changes

Resolves #106

During Terraform plan | apply, configuration resources will attempt to make the following change when rollout_options are not specified.

Terraform will perform the following actions:

  # bindplane_configuration.configuration will be updated in-place
  ~ resource "bindplane_configuration" "configuration" {
        id                   = "01J4QENC1ZFCZ4A636AETS1990"
        name                 = "my-config"
        # (6 unchanged attributes hidden)

      - rollout_options {
            # (1 unchanged attribute hidden)
        }

        # (3 unchanged blocks hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Testing

Rollout options should be idempotent when no changes have been made. Test adding, removing, and modifying rollout options. Repeat applies should not suggest changes unless something has changed.

Please check that the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• CI passes