Add userAssignedIdentity reference to AKS cluster

[twobiers]

Description of your changes

This adds a missing cross reference to UserAssignedIdentities within AKS.
Fixes #662

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

I couldn't test it, because I could not make make uptest work (installing: No such file or directory).
Hope that the CI pipeline can give me feedback.

[turkenf]

/test-examples="examples/containerservice/v1beta2/kubernetescluster.yaml"

[turkenf]

Thanks for the PR @twobiers, I left a few comments. After making your changes please run make generate and push them.

[twobiers]

Thanks for the comments, I will look into that. Do you have any documentation regarding the development process (e.g. what should be run before filing a PR)? I cannot find detailed instructions how to contribute to the providers and make generate is not a valid target for me.
This would be helpful for the future.

[turkenf]

You can check this guide. It is a document about adding new resources, but it covers many scenarios (e.g., step 5 and testing Instructions).

[twobiers]

Thanks for the link and your comments. I managed to address and understand them now. Also I managed to make the makefile work. I missed initializing the build git submodule.

The next contribution will be smoother.

[twobiers]

/test-examples="examples/containerservice/v1beta2/kubernetescluster-with-identity.yaml"

[turkenf]

/test-examples="examples/containerservice/v1beta2/kubernetescluster-with-identity.yaml"

[turkenf]

/test-examples="examples/containerservice/v1beta2/kubernetescluster-with-identity.yaml"

[twobiers]

I don't understand what I'm missing out. It looks like in the e2e test crossplane is silently omitting the identityIdsSelector.

[turkenf]

I don't understand what I'm missing out. It looks like in the e2e test crossplane is silently omitting the identityIdsSelector.

It would be good to test it manually to understand exactly what is causing it.