Plainbox session can't be resumed if plugged in devices (e.g. mice) have been replugged/changed

Here is another slightly different output of error message: http://paste.ubuntu.com/15492843/ .

We also tried to modify the job descriptions (for jobs `input/pointing...` and `input/clicking...`) to remove
     requires: device.path == '{path}'

It looks like it doesn't have any (good or bad) impact: the issue is still there.

Kristin provided the attachments above using
    udevadm info --export-db

udev1-port1: collected after plugging in keyboard to port 1
udev2-port2: collected after unplugging keyboard from port 1 > plug in keyboard to port 2
udev3-replug-port1: collected after unplugging keyboard from port 2 > replug in keyboard to port 1

As you can see, even when the same keyboard is replugged in the same port, the data changes.

Every time a USB input device is plugged, even if it's the same device and it's plugged in the same USB port, its path (e.g. '/devices/pci0000:00/0000:00:14.0/usb3/3-7/3-7:1.0/0003:06CB:2970.0004/input/input12') changes. More specifically, the last part (inputXX) changes.

In previous versions of the Checkbox provider, we were using this input number as part of the job ID, which avoided the "duplicate job id" error.

An option to do so with the new version of plainbox is to add a parameter (e.g. `input`) to the list of Udev properties available (name, bus, interface, product_id, etc.) for input devices. We could then use this parameter in the job ID and avoid the duplicate job ID exception.