Import mapbox::variant in lieu of c++17 variant

See http://github.com/mapbox/variant.

Change-Id: Idbb2af80f0478188b652858d08817a5450630f0f
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
5 files changed
tree: fb7769b12e4a1aa2826a5006f28317ce143b7f14
  1. mapbox/
  2. sdbusplus/
  3. test/
  4. LICENSE