azure: add virtual machine data disk attachment resource

[prfj]

Description of your changes

Fixes #467

I have:

• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

Tested locally by applying CRDs, creating a default ProviderConfig, run make run and apply the examples/linuxvirtualmachinedatadiskattachment.yaml file

$ kubectl get managed

NAME                                     READY   SYNCED   EXTERNAL-NAME   AGE
resourcegroup.azure.upbound.io/example   True    True     example         7m22s

NAME                                                   READY   SYNCED   EXTERNAL-NAME   AGE
linuxvirtualmachine.compute.azure.upbound.io/example   True    True     example         7m22s

NAME                                           READY   SYNCED   EXTERNAL-NAME   AGE
manageddisk.compute.azure.upbound.io/example   True    True     example         7m22s

NAME                                                                READY   SYNCED   EXTERNAL-NAME                                                                                                                                      AGE
virtualmachinedatadiskattachment.compute.azure.upbound.io/example   True    True     /subscriptions/XXXXXX/resourceGroups/example/providers/Microsoft.Compute/virtualMachines/example/dataDisks/example   7m22s

NAME                                                READY   SYNCED   EXTERNAL-NAME   AGE
networkinterface.network.azure.upbound.io/example   True    True     example         7m23s

NAME                                      READY   SYNCED   EXTERNAL-NAME   AGE
subnet.network.azure.upbound.io/example   True    True     example         7m23s

NAME                                              READY   SYNCED   EXTERNAL-NAME   AGE
virtualnetwork.network.azure.upbound.io/example   True    True     example         7m23s

Tested with Uptest

[turkenf]

/test-examples="examples/compute/virtualmachinedatadiskattachment.yaml"

[turkenf]

Thank you @prfj, I left a comment for you.

Could you please do the manual tests of the resource and fill in the description section?

[prfj]

@turkenf Can you run a new uptest now ? I've added selectors/references and fixed the example file

Could you please do the manual tests of the resource and fill in the description section?

I've tested using the "Manual Test" method what kind of evidence you want me to put on description ?

[turkenf]

@prfj, just put the output of kubectl get managed and could you please try to trigger uptest? Since you are a contributor, I expect it to work, if not I will trigger.

[prfj]

/test-examples="examples/compute/virtualmachinedatadiskattachment.yaml"

[prfj]

@turkenf applied sugestions please check

[turkenf]

/test-examples="examples/compute/virtualmachinedatadiskattachment.yaml"

[turkenf]

Thank you for your effort @prfj, LGTM.