Adds handling of the non-git layers to create and update the
corresponding layer objects in Toaster.
(Bitbake rev: 0a9b5d7d9655dbb09d458fc6e330e932f0f9dab6)
Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>