Add support for Inventory.Decorator.Compatible

This adds support for the compatibility strings interface described in
https://github.com/openbmc/phosphor-dbus-interfaces/tree/master/yaml/xyz/openbmc_project/Software#compatibility.

The Version objects will now be created with the Inventory.Decorator.Compatible
interface with the compatibility names coming from the MANIFEST file.
e.g.
version=1.2.3
MachineName=foo
purpose=Other
ExtendedVersion=a.b.c
CompatibleName=foo.bar
CompatibleName=baz.bim

Tested:
$ busctl get-property xyz.openbmc_project.Software.Version \
    /xyz/openbmc_project/software/517751da \
    xyz.openbmc_project.Inventory.Decorator.Compatible Names
as 2 "foo.bar" "baz.bim"

Signed-off-by: Justin Ledford <justinledford@google.com>
Change-Id: I9ee36af2d3d1494d533a3b09c466a250c4fe786b
6 files changed