benchmarks/perftest: upgrade to 4.5-0.17

Changelog:
    * https://github.com/linux-rdma/perftest/releases/tag/4.4-0.8
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.9
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.11
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.18-beta
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.23-beta
    * https://github.com/linux-rdma/perftest/releases/tag/4.4-0.29
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.32
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.36
    * https://github.com/linux-rdma/perftest/releases/tag/v4.4-0.37
    * https://github.com/linux-rdma/perftest/releases/tag/v4.5-0.2
    * https://github.com/linux-rdma/perftest/releases/tag/v4.5-0.12
    * https://github.com/linux-rdma/perftest/releases/tag/v4.5-0.14
    * https://github.com/linux-rdma/perftest/releases/tag/v4.5-0.17

Differential Revision: https://reviews.freebsd.org/D44398