dev-python/oslo-log: restore missing S

This partially reverts commit 0636a46bb5.

Gentoo-bug: 574950

Package-Manager: portage-2.2.27

dev-python/oslo-log/oslo-log-1.10.0.ebuild

@@ -11,6 +11,7 @@ inherit distutils-r1
 DESCRIPTION="OpenStack logging config library"
 HOMEPAGE="https://pypi.python.org/pypi/oslo.log https://github.com/openstack/oslo.log"
 SRC_URI="mirror://pypi/o/oslo.log/oslo.log-${PV}.tar.gz"
+S="${WORKDIR}/oslo.log-${PV}"
 
 LICENSE="Apache-2.0"
 SLOT="0"
@@ -49,8 +50,6 @@ DEPEND="
 		dev-python/nose[${PYTHON_USEDEP}]
 	)"
 
-PYTHON_COMPAT=( python{2_7,3_{3,4,5}} )
-
 python_prepare_all() {
 	sed -i '/^hacking/d' test-requirements.txt || die
 	distutils-r1_python_prepare_all