pythonPackages.kuberentes: refactor

[costrouc]

fix build issue from missing dependency adal. This is due to adal
being added as a dependency in July
23rd. kubernetes-client/python@9afec55#diff-b4ef698db8ca845e5845c4618278f29a

Motivation for this change

18.09 Zero Hydra Failures #45960

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Fits CONTRIBUTING.md.

---

[xeji]

@GrahamcOfBorg build python36Packages.kubernetes python27Packages.kubernetes

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: python36Packages.kubernetes, python27Packages.kubernetes

Partial log (click to expand)

collected 61 items

kubernetes/config/dateutil_test.py ..                                    [  3%]
kubernetes/config/incluster_config_test.py ..........                    [ 19%]
kubernetes/config/kube_config_test.py .................................. [ 75%]
.......                                                                  [ 86%]
kubernetes/stream/ws_client_test.py .                                    [ 88%]
kubernetes/watch/watch_test.py .......                                   [100%]

========================== 61 passed in 3.07 seconds ===========================

[GrahamcOfBorg]

Success on aarch64-linux (full log)

Attempted: python36Packages.kubernetes, python27Packages.kubernetes

Partial log (click to expand)

.......                                                                  [ 86%]
kubernetes/stream/ws_client_test.py .                                    [ 88%]
kubernetes/watch/watch_test.py .......                                   [100%]

========================== 61 passed in 15.95 seconds ==========================
kubernetes/watch/watch_test.py .......                                   [100%]

========================== 61 passed in 17.24 seconds ==========================
/nix/store/y5sqf442l4jisi3dfbfijsa1glir4jyp-python3.6-kubernetes-7.0.0
/nix/store/0anr3qdpf4ldhmracdjp2qfy650238k8-python2.7-kubernetes-7.0.0

[GrahamcOfBorg]

Success on x86_64-darwin (full log)

Attempted: python36Packages.kubernetes, python27Packages.kubernetes

Partial log (click to expand)

these derivations will be built:
  /nix/store/fry8402f85pydidabn2p8vbv9crbjsx5-python2.7-kubernetes-7.0.0.drv
waiting for locks or build slots...
/nix/store/gg8hf6kcx5w0pdvjbm80yclfncjb8jhh-python3.6-kubernetes-7.0.0
/nix/store/9gpyaxm31gm23wcb70l3qgp1qnvj35qq-python2.7-kubernetes-7.0.0

[xeji]

backported: 5974311