Update build.yaml and compose_vllm.yaml because of refactoring of GenAIComps. Fix issue left by https://github.com/opea-project/GenAIExamples/pull/1353
Update build.yaml and compose_vllm.yaml because of refactoring of GenAIComps. Fix issue left by https://github.com/opea-project/GenAIExamples/pull/1353