MFC 310652,310657,310658

MFC 310652,310657,310658

310652
    hyperv/hn: Consolidate hn_{suspend,resume}

    Sponsored by:   Microsoft
    Differential Revision:  https://reviews.freebsd.org/D8907

310657
    hyperv/hn: Function renaming; no functional changes.

    Sponsored by:   Microsoft
    Differential Revision:  https://reviews.freebsd.org/D8908

310658
    hyperv/hn: Factor out function to set rxfilter.

    Sponsored by:   Microsoft
    Differential Revision:  https://reviews.freebsd.org/D8928

git-svn-id: svn://svn.freebsd.org/base/stable/10@311258 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f