I am packaging python-oca in Fedora and CentOS. As per the guidelines it's good to have the license file. I see that in readme it's mentioned that it follows ASL.
Would be great if the file is added in repo.
If you would like, I can open a PR

here are different versions of ASL
1.0: https://www.apache.org/licenses/LICENSE-1.0
1.1: https://www.apache.org/licenses/LICENSE-1.1
2.0: https://www.apache.org/licenses/LICENSE-2.0.txt