For 4.9.18 and 4.10.6 cherry-picked the VMBus leak fix
from Linus' tree instead of char-misc.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
Note, this also removes the LTS4.4 build options and replaces
it with a KERNEL= build option to select the kernel to build.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>