netdata：检查当前是否是root权限运行

检查当前是否是root权限运行

static int am_i_running_as_root() {
    uid_t uid = getuid(), euid = geteuid();

    if(uid == 0 || euid == 0) {
        printf("I am running with escalated privileges, uid = %u, euid = %u.\n", uid, euid);
        return 1;
    }

    printf("I am not running with escalated privileges, uid = %u, euid = %u.\n", uid, euid);
    return 0;
}