fix: change LLM_D_RELEASE default to main for GA InferencePool API

The previous attempt set LLM_D_RELEASE in ci-benchmark.yaml, but
issue_comment-triggered workflows always use the workflow YAML from the
default branch — not the PR branch. The env var never took effect.

Change the default in deploy/install.sh instead (v0.3.0 → main), which
IS executed from the PR checkout. llm-d main uses inferencepool chart
v1.4.0 which creates InferencePool with the GA API group
(inference.networking.k8s.io/v1) that Istio 1.29+ expects.

The old v0.3.0 default used chart v1.0.1 with the alpha API group
(inference.networking.x-k8s.io/v1alpha2), which Istio ignores —
causing Gateway HTTP 500 errors.

Made-with: Cursor

Author: kahilam

.github/workflows/ci-benchmark.yaml

@@ -545,9 +545,6 @@ jobs:
           INSTALL_GATEWAY_CTRLPLANE: "false"
           E2E_TESTS_ENABLED: "true"
           NAMESPACE_SCOPED: "false"
-          # Use main branch of llm-d/llm-d for inferencepool chart v1.2.1 (GA API support);
-          # v0.3.0 default uses alpha API which Istio 1.29+ does not route through ext_proc.
-          LLM_D_RELEASE: main
           LLMD_NS: ${{ env.LLMD_NAMESPACE }}
           WVA_NS: ${{ env.WVA_NAMESPACE }}
           CONTROLLER_INSTANCE: ${{ env.WVA_NAMESPACE }}

deploy/install.sh

@@ -47,7 +47,7 @@ CONTROLLER_INSTANCE=${CONTROLLER_INSTANCE:-""}
 # llm-d Configuration
 LLM_D_OWNER=${LLM_D_OWNER:-"llm-d"}
 LLM_D_PROJECT=${LLM_D_PROJECT:-"llm-d"}
-LLM_D_RELEASE=${LLM_D_RELEASE:-"v0.3.0"}
+LLM_D_RELEASE=${LLM_D_RELEASE:-"main"}
 LLM_D_MODELSERVICE_NAME=${LLM_D_MODELSERVICE_NAME:-"ms-$WELL_LIT_PATH_NAME-llm-d-modelservice"}
 LLM_D_EPP_NAME=${LLM_D_EPP_NAME:-"gaie-$WELL_LIT_PATH_NAME-epp"}
 CLIENT_PREREQ_DIR=${CLIENT_PREREQ_DIR:-"$WVA_PROJECT/$LLM_D_PROJECT/guides/prereq/client-setup"}