Make sure the OIDC provider is stored in both our supported regions

[avnes]

Describe your changes

While working on https://github.com/dfds/cloudplatform/issues/2409 I discovered that updating my database instances could find the OIDC information, because Terraform could not find the /managed/cluster/oidc-provider path in SSM Parameter Store. It turns out that this data is only stored in eu-central-1, and if yoru database instance is in our other supported region (eu-west-1) , Terraform can not find it.

The solution is to make sure that entry is created in SSM for both our regions. I tested this with my sandbox capability account.

Issue ticket number and link

https://github.com/dfds/cloudplatform/issues/2409

Checklist before requesting a review

• I have tested changes in my sandbox
• I have added the needed changes in the test/integration folder to apply my changes in QA. Read the guide on adding environment variables in QA
• I have rebased the code to master (or merged in the latest from master)

Is it a new release?

• Apply a release tag release:(major|minor|patch), following semantic versioning in this guide or norelease if there is no changes to the Terraform code

[silviucalin]

Ah, yes. Was about to address this as I was having trouble updating an existing RDS instance in my sandbox too.
Thanks!