Finish adding oracle-cloud tf setup

[h3mmy]

Details

Describe the solution you'd like:

It's currently incomplete. Just need to automate spinning up an OKE cluster using free resources and then shifting workloads to and fro as needed. May require setting up PDBs first and potentially require restructuring beforehand.

Anything else you would like to add:

Some useful references:

[https://github.com/oracle-terraform-modules/terraform-oci-oke/blob/main/terraform.tfvars.example]
[https://github.com/oracle-terraform-modules/terraform-oci-oke/blob/main/docs/terraformoptions.adoc#oci-networking]
[https://github.com/oracle-terraform-modules/terraform-oci-oke/blob/main/docs/configuration.adoc]
[https://github.com/cablespaghetti/oracle-cloud-kubernetes/blob/main/oke/oke.tf]

Potential pre-reqs:
[x] #2218
[x] #1054
[] #2491