"Graduated Tier - Sysdig Secure + Monitor" plan in IBM Cloud Monitoring not supported by the terraform module

[AghilasBouchebbah]

Description:
The current IBM Cloud Monitoring Terraform module only supports the lite and graduated-tier plans. However, the Graduated Tier - Sysdig Secure + Monitor plan is critical for our use cases requiring sysdig features. Please add support for this plan to ensure compatibility and avoid manual configuration outside Terraform.

Steps to Reproduce:

1. Attempt to configure IBM Cloud Monitoring with the Graduated Tier - Sysdig Secure + Monitor plan using Terraform.
2. Observe that the plan is not available in the module's plan variable.

Expected Behavior:
The module should support the Graduated Tier - Sysdig Secure + Monitor plan.

Actual Behavior:
The module only supports lite and graduated-tier.

[vburckhardt]

Appears to have been addressed by #61 . @whoffler - could you close this external issue if so?