init: Replace cgroup hardcoded path with detected one

        std::for_each(descriptors_.begin(), descriptors_.end(),

                      std::bind(&DescriptorInfo::CreateAndPublish, std::placeholders::_1, scon));

        // See if there were "writepid" instructions to write to files under /dev/cpuset/.

        auto cpuset_predicate = [](const std::string& path) {

            return StartsWith(path, "/dev/cpuset/");

        // See if there were "writepid" instructions to write to files under cpuset path.

        std::string cpuset_path;

        if (CgroupGetControllerPath("cpuset", &cpuset_path)) {

            auto cpuset_predicate = [&cpuset_path](const std::string& path) {

                return StartsWith(path, cpuset_path + "/");

            };

        auto iter = std::find_if(writepid_files_.begin(), writepid_files_.end(), cpuset_predicate);

            auto iter =

                    std::find_if(writepid_files_.begin(), writepid_files_.end(), cpuset_predicate);

            if (iter == writepid_files_.end()) {

                // There were no "writepid" instructions for cpusets, check if the system default

                // cpuset is specified to be used for the process.

                        default_cpuset.push_back('/');

                    }

                    writepid_files_.push_back(

                    StringPrintf("/dev/cpuset%stasks", default_cpuset.c_str()));

                            StringPrintf("%s%stasks", cpuset_path.c_str(), default_cpuset.c_str()));

                }

            }

        } else {

            LOG(ERROR) << "cpuset cgroup controller is not mounted!";

        }

        std::string pid_str = std::to_string(getpid());

        for (const auto& file : writepid_files_) {

            if (!WriteStringToFile(pid_str, file)) {