Update the syntax to support abstract classes in python 2 and python 3.
Depends on: new style classes -- https://gerrit.fd.io/r/16166
Change-Id: Iad2c1240149f38b3faca1b37ab95d3d210e1daee
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
This reverts commit a98346f664aae148d26a8e158008b773d73db96f.
Change-Id: Iee5b3a5ddff0e8fd3a30fe5973cee24de434fe12
Signed-off-by: Ole Troan <ot@cisco.com>