harmony/py-mako: tests depend on py-six

harmony/py-mako/APKBUILD

@@ -10,6 +10,7 @@ arch="noarch"
 license="MIT"
 depends=""
 makedepends="python3-dev"
+checkdepends="py-six"
 subpackages="py3-${pkgname#py-}:_py3"
 source="https://files.pythonhosted.org/packages/source/${_pkgname:0:1}/$_pkgname/$_pkgname-$pkgver.tar.gz"
 builddir="$srcdir"/$_pkgname-$pkgver