Fix universal extraction in non-universal wheel
Fix universal extraction in non-universal wheel

The pypi-extract-universal.py would raise ConfigParser.NoOptionError
when inspecting a setup.cfg with a wheel section but no universal
option. Guard against this by actually testing whether the option is
there rather than merely whether the section exists.

Change-Id: I7a907464e5b1dc211c7e4c4c2f3e6375b7a6085d

noorul/os-project-config,coolsvap/project-config,Tesora/tesora-project-config,anbangr/osci-project-config,noorul/os-project-config,openstack-infra/project-config,dongwenjuan/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,anbangr/osci-project-config,openstack-infra/project-config,coolsvap/project-config