Add selinux policy per distro

This adds the ability to have different profiles for individual distros
and versions of the distro because they all ship with and depend on
different versions of policy packages.

The `selinux` dir contains the unmodified policy that is being used
today.  The `selinux-fedora` dir contains the new policy for fedora 24
with the changes for it to compile and work on the system.

The fedora policy is from commit
https://github.com/projectatomic/docker-selinux/commit/4a6ce94da5e34868642ebcc7a67da937d4c73283

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Upstream-commit: 32b1f26c5111b22fe4277879c4f5e4687a6a72fc
Component: engine

components/engine/hack/make/build-rpm

@@ -135,8 +135,12 @@ set -e
 		# selinux policy referencing systemd things won't work on non-systemd versions
 		# of centos or rhel, which we don't support anyways
 		if [ "${suite%.*}" -gt 6 ] && [[ "$version" != opensuse* ]]; then
+			selinuxDir="selinux"
+			if [ -d "./contrib/selinux-$version" ]; then
+				selinuxDir="selinux-${version}"
+			fi
 			cat >> "$DEST/$version/Dockerfile.build" <<-EOF
-				RUN tar -cz -C /usr/src/${rpmName}/contrib -f /root/rpmbuild/SOURCES/${rpmName}-selinux.tar.gz ${rpmName}-selinux
+				RUN tar -cz -C /usr/src/${rpmName}/contrib/${selinuxDir} -f /root/rpmbuild/SOURCES/${rpmName}-selinux.tar.gz ${rpmName}-selinux
 				RUN rpmbuild -ba \
 						--define '_gitcommit $DOCKER_GITCOMMIT' \
 						--define '_release $rpmRelease' \