use pull_request event and environment variables

.github/workflows/e2e.yaml

@@ -33,9 +33,9 @@ jobs:
           echo "change files" $ALL_CHANGED_FILES
           export ARM_OIDC_REQUEST_TOKEN=$ACTIONS_ID_TOKEN_REQUEST_TOKEN
           export ARM_OIDC_REQUEST_URL=$ACTIONS_ID_TOKEN_REQUEST_URL
-          export ARM_SUBSCRIPTION_ID=${{ vars.AZURE_SUBSCRIPTION_ID }}
-          export ARM_TENANT_ID=${{ vars.AZURE_TENANT_ID }}
-          export ARM_CLIENT_ID=${{ vars.AZURE_CLIENT_ID }}
+          export ARM_SUBSCRIPTION_ID=${{ env.AZURE_SUBSCRIPTION_ID }}
+          export ARM_TENANT_ID=${{ env.AZURE_TENANT_ID }}
+          export ARM_CLIENT_ID=${{ env.AZURE_CLIENT_ID }}
           docker run --rm -v $(pwd):/src -w /src/test --network=host -e ARM_SUBSCRIPTION_ID -e ARM_TENANT_ID -e ARM_CLIENT_ID -e ARM_OIDC_REQUEST_TOKEN -e ARM_OIDC_REQUEST_URL -e ARM_USE_OIDC=true -e CHANGED_FOLDERS mcr.microsoft.com/azterraform:latest sh -c "pkenv install 1.10.2 && go mod tidy && go test -timeout=360m -v ./e2e"
       - uses: actions/upload-artifact@a8a3f3ad30e3422c9c7b888a15615d19a852ae32 #v3.1.3
         with: