fix integration tests config validation for loki

Author: dhaidashenko

.github/workflows/integration-tests.yml

@@ -607,7 +607,7 @@ jobs:
           go_coverage_src_dir: /var/tmp/go-coverage
           go_coverage_dest_dir: ${{ github.workspace }}/.covdata
           DEFAULT_CHAINLINK_IMAGE: ${{ env.CHAINLINK_IMAGE }}
-          DEFAULT_LOKI_TENANT_ID: ${{ secrets.GRAFANA_INTERNAL_TENANT_ID }}
+          DEFAULT_LOKI_TENANT_ID: "promtail"
           DEFAULT_LOKI_ENDPOINT: https://${{ secrets.GRAFANA_INTERNAL_HOST }}/loki/api/v1/push
           DEFAULT_LOKI_BASIC_AUTH: ${{ secrets.GRAFANA_INTERNAL_BASIC_AUTH }}
           DEFAULT_GRAFANA_BASE_URL: "http://localhost:8080/primary"