Move etc/ci/taskcluster one level up

etc/taskcluster/curl-artifact.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+task_id="${1}"
+artifact="${2}"
+shift 2
+queue="https://queue.taskcluster.net/v1"
+url="${queue}/task/${task_id}/artifacts/public/${artifact}"
+echo "Fetching ${url}" >&2
+curl \
+    --retry 5 \
+    --connect-timeout 10 \
+    --location \
+    --fail \
+    "${url}" \
+    "${@}"