增加sys/debug 部署测试；agent dev/user/instance元信息提取优化；sys/tests 优化 (#26)

Reviewed-on: #26
Reviewed-by: xuxt <xuxt@zgclab.edu.cn>
Reviewed-by: huhy <husteryezi@163.com>
Reviewed-by: sundapeng <sundp@mail.zgclab.edu.cn>

src/sys/tests/scripts/08_restart_agent_reregister.sh

@@ -8,6 +8,16 @@ REPO_ROOT="$(cd "$TEST_ROOT/../../.." && pwd)"
 
 API_BASE="http://localhost:32300/api/v1/master"
 
+if [[ -f "$TEST_ROOT/.env" ]]; then
+  set -a
+  # shellcheck disable=SC1090
+  source "$TEST_ROOT/.env"
+  set +a
+else
+  source "$REPO_ROOT/scripts/common/build_user.sh"
+  load_build_user
+fi
+
 ID_B="$(cat "$TMP_DIR/node_id_b")"
 IP0_B="$(cat "$TMP_DIR/initial_ip_b")"