fix: Refactoring terraform

[namejsjeongkr]

What does this PR do?

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Motivation

• I'd like to suggest a consistent refactoring of terraform. In my opinion, the code currently written is inconsistent. (If you look at terraform codes of multiple services in the ai-ml folder, the code isn't written consistently for each service. local, provider and so on.)
• The committed code is the sample I'd like to suggest. If you give me additional comments, I'd to revise the rest of the codes as well.

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Mandatory for new blueprints. Yes, I have added a example to support my blueprint PR
• Mandatory for new blueprints. Yes, I have updated the website/docs or website/blog section for this feature
• Yes, I ran pre-commit run -a with this PR. Link for installing pre-commit locally

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[namejsjeongkr]

@dorukozturk @vara-bonthu @askulkarni2 Do you mind if I ask you to review this one ?