Add Caddy Hurl tests.

bin/release/test_caddy.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+set -Eeuo pipefail
+
+echo "Test Caddy Hurl tests <https://github.com/caddyserver/caddy>"
+echo "------------------------------------------------------------"
+
+work_dir=build/
+mkdir -p build/
+cd "$work_dir".
+rm -rf caddy || true
+git clone --branch hurl-tests --no-depth https://github.com/caddyserver/caddy.git
+cd caddy
+
+# TODO: Install caddy depending on the system
+
+caddy stop || true
+caddy start 2>/dev/null
+
+hurl --jobs 1 --variables-file caddytest/spec/hurl_vars.properties --test caddytest/spec/
+
+caddy stop