Capture Terraform resource schema version with resource.Terraformed

[ulucinar]

Description of your changes

Fixes #116

The PR captures the available Terraform resource schema version as part of terrajet's resource.Terraformed. For certain resources, it turns out that the schema version is not 0 and that version info is already available in the native provider. With this PR we should be able to capture the correct schema version without manual configuration.

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 have successfully tested these changes together with crossplane-contrib/provider-jet-azure#64 using the following example manifests:

• https://github.com/crossplane-contrib/provider-tf-azure/blob/3357a1ee3ed444abff09fff09caacb7c942455c1/examples/storage/storageaccount.yaml
• https://github.com/crossplane-contrib/provider-tf-azure/blob/3357a1ee3ed444abff09fff09caacb7c942455c1/examples/storage/storagecontainer.yaml
• https://github.com/crossplane-contrib/provider-tf-azure/blob/3357a1ee3ed444abff09fff09caacb7c942455c1/examples/storage/storageblob.yaml

NAME                                                    READY   SYNCED   EXTERNAL-NAME                                                              AGE
resourcegroup.resource.azure.tf.crossplane.io/example   True    True     /subscriptions/038f2b7c-3265-43b8-8624-c9ad5da610a8/resourceGroups/alper   5m30s

NAME                                                    READY   SYNCED   EXTERNAL-NAME                                                                                                                                   AGE
storageaccount.storage.azure.tf.crossplane.io/example   True    True     /subscriptions/038f2b7c-3265-43b8-8624-c9ad5da610a8/resourceGroups/alper/providers/Microsoft.Storage/storageAccounts/crossplaneexamplestoracc   4m9s

NAME                                                 READY   SYNCED   EXTERNAL-NAME                                                                   AGE
storageblob.storage.azure.tf.crossplane.io/example   True    True     https://crossplaneexamplestoracc.blob.core.windows.net/content/sample_content   4m9s

NAME                                                      READY   SYNCED   EXTERNAL-NAME                                                    AGE
storagecontainer.storage.azure.tf.crossplane.io/example   True    True     https://crossplaneexamplestoracc.blob.core.windows.net/content   4m9s

Also verified resource states on Azure portal.

[turkenh]

Great finding, thanks @ulucinar!

[ulucinar]

Thank you @turkenh!