Remove duplicate tags variable declaration for postgres

[jakob-nielsen-dfds]

Describe your changes

As the tags variable was defined multiple times for the postgres module, using the module would fail with the error Duplicate variable declaration.

Issue ticket number and link

None.

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 don't have permissions to see this guide - is this something internal for Cloud Engineering?
• 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
  - This could go into a patch release. release:patch is not a valid git tag name. So can't tag my branch with this.. Is this a GitHub label instead?

[avnes]

Thanks for discovering and fixing this issue

[jakob-nielsen-dfds]

Thanks for discovering and fixing this issue

No problem.

The PR template stuff around environment variables is that an internal Cloud Engineering thing? Just for future reference 😊

[samidbb]

@jakob-nielsen-dfds PR Template is generated on new PRs. CE members should ensure that the applicable items on the checklist has been completed

[jakob-nielsen-dfds]

@jakob-nielsen-dfds PR Template is generated on new PRs. CE members should ensure that the applicable items on the checklist has been completed

Okay - wasn't clear to me whether it was the creator of the PR who had to complete the checklist 😊