
openstackdocstheme 2.2.0 introduces new variables, add them here so that both older and newer openstackdocstheme versions are supported. 2.2.0 suport the old settings but in the future those might get removed, so let's be future-proof. Since this repo is still supporting py27, we need support for older openstackdocstheme versions. Change-Id: I6ee389843d1d959cffb126e0cd56ef6ef1e2f5e1