Description of problem:
When attempting to rebuild portions of the frozen package set of Fedora 25 for the Base Runtime effort, we discovered that itstool fails to build due to a missing BuildRequires on python due to python being removed from the default buildroot. This issue also manifests itself in Rawhide where only python3 is present in the buildroot.

Version-Release number of selected component (if applicable):
itstool-2.0.2-4.fc24

How reproducible:
Every time

Steps to Reproduce (rawhide):
1. fedpkg clone itstool
2. fedpkg switch-branch master
3. fedpkg mockbuild

Actual results (rawhide):

checking for python module libxml2... not found
configure: error: Python module libxml2 is needed to run this package

Actual results (base-runtime):

configure: error: no suitable Python interpreter found


Expected results:
Successful build of the package.

Additional info:
This is needed as part of the Base Runtime effort.

Attached is a patch that adds the missing BuildRequires on python.

Please apply the patch or respond with a reason it should not be applied within two weeks. After that time, a provenpackager will go ahead and apply it.