chore: RAG pipeline leaking cluster patch

[bangqipropel]

Reason for Change:

1. Use composite steps for avoiding cleaning step is not run when interrupted.
2. Add RAG pipeline back when rag engine related codes are changed.
3. Use the image aimodelsregistrytest.azurecr.io/kaito-rag-service:0.0.7 for now, will change it back when MCR image is good
4. Changed the image in the unit test too

Requirements

• added unit tests and e2e tests (if applicable).

Issue Fixed:

Notes for Reviewers:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
pkg/ragengine/controllers/preset-rag.go	70.73% <100.00%> (ø)

... and 18 files with indirect coverage changes