Support multi-arch testing

Related to rhbz#981682
Add test results for Linux-s390x

Related to rhbz#981682
Add test results for Linux-ppc64

Related to rhbz#981682
Add test results for Linux-s390

Related to rhbz#981682
Add test results for Linux-ppc

Related to rhbz#981682
Update the spec file with multi-arch test fixes

Closes rhbz#981682