Python licenses change depending on the environment

[adriangonz]

Describe the bug

When generating the Python licenses using make -c python licenses, these seem to change depending on the environment. In particular, on some envs it's able to fetch the Seldon Core license and in others (e.g. JX cluster) it just returns NONE.

Since the output of the local environment and the CI server may not be the same, this causes false errors on the linting pipeline.

To reproduce

1. Run make -C python install_dev licenses
2. Depending on the environment, the ./python/licenses/license.txt file will list SC's license as NONE or as Apache.

Expected behaviour

The make -c python licenses command should be able to fetch SC's correct license (i.e. Apache) and not change between environments.

[adriangonz]

/priority p0