Automator: update common-files@master in istio/api@master (#3453)

Author: istio-testing

common/.commonfiles.sha

@@ -1 +1 @@
-f48640e24b3bbca425d82d33f582bffb048b6b2e
+91642a668aca4904bc6f28d5d8d713ee1c3b4422

common/scripts/run.sh

@@ -49,6 +49,7 @@ read -ra DOCKER_RUN_OPTIONS <<< "${DOCKER_RUN_OPTIONS:-}"
     --sig-proxy=true \
     --cap-add=SYS_ADMIN \
     ${DOCKER_SOCKET_MOUNT:--v /var/run/docker.sock:/var/run/docker.sock} \
+    -e DOCKER_HOST=${DOCKER_SOCKET_HOST:-unix:///var/run/docker.sock} \
     $CONTAINER_OPTIONS \
     --env-file <(env | grep -v ${ENV_BLOCKLIST}) \
     -e IN_BUILD_CONTAINER=1 \