kernel plugin: the modprobe output parsing is wrong

[Sergio Schvezov]

For this output:
$ modprobe --show-depends -n vmwgfx
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/video/fbdev/core/sysimgblt.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/video/fbdev/core/sysfillrect.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/video/fbdev/core/syscopyarea.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/video/fbdev/core/fb_sys_fops.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/gpu/drm/drm.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/gpu/drm/drm_kms_helper.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/gpu/drm/ttm/ttm.ko
insmod /lib/modules/4.10.0-13-generic/kernel/drivers/gpu/drm/vmwgfx/vmwgfx.ko enable_fbdev=1

We always capture the last item, on the last line you can see why this is a problem.

[Sergio Schvezov (sergiusens)]

https://github.com/snapcore/snapcraft/pull/1208