net/unifi: Update to 5.12.35

(Tested on NetBSD 8/amd64 with up-to-date dependencies from pkgsrc
head.  This is notable as only recently does mongodb3 work (fdatasync)
and build with up-to-date boost.  Thanks to Paul Ripke and Adam for
fixes.)

Upstream changes since last pkgsrc update:

Features

    Cloud Email.*
    Netconsole logging for USG.
    New Settings.
    Push notification support.
    RADIUS DAS/DAC/CoA support.
    Release channel selection for controller and firmware updates (New Settings).
    Wi-Fi AI (New Settings).
    Wi-Fi Schedule enhancements (New Settings).

*Cloud Email notes:

    Enabled after successful Remote Access login. This will send (all)
    admin invites, alert/event, and password recovery emails via UniFi
    Cloud Access without requiring a SMTP server to be configured. We
    plan to add support for password recovery without having Remote
    Access or SMTP configured in a future update.  If SMTP is
    configured then that will be used instead of Cloud Email.

(gdt)