required providers source path for child modules needs to reflect new path

[christophercorn]

Description

terraform init returns:

│ Warning: Additional provider information from registry
│ 
│ The remote registry returned warnings for registry.terraform.io/hashicorp/oci:
│ - For users on Terraform 0.13 or greater, this provider has moved to oracle/oci. Please update your source in required_providers.

this is because the child modules cannot inherit "source = oracle/oci" from the parent module. inheritance does not work here. as documented here:
https://developer.hashicorp.com/terraform/language/modules/develop/providers

Note: Only provider configurations are inherited by child modules, not provider source or version requirements. Each module must declare its own provider requirements. This is especially important for non-HashiCorp providers.

[karthicgit]

fixed.