Move to CLI schema

[ezgidemirel]

Description of your changes

This change updates the provider to use CLI schema. This change is on top of this PR.

Fixes #166

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

Created/deleted KMS, Neptune Cluster and Neptune Instance resources.

NAME                                     READY   SYNCED   EXTERNAL-NAME                          AGE
key.kms.aws.jet.crossplane.io/ezgi-key   True    True     46964507-81f5-4b23-9bc2-15dc87a2c1b1   15m

NAME                                                          READY   SYNCED   EXTERNAL-NAME   AGE
clusterinstance.neptune.aws.jet.crossplane.io/ezgi-instance   True    True     ezgi-instance   10m

NAME                                                 READY   SYNCED   EXTERNAL-NAME   AGE
cluster.neptune.aws.jet.crossplane.io/ezgi-cluster   True    True     ezgi-cluster    13m

[muvaf]

Thanks @ezgidemirel !

[muvaf]

Why are these not required anymore?

[ezgidemirel]

They're not marked as "required": true in the cli schema. I generated preview CRDs and noticed the same change in some of the other resources too.

[muvaf]

Could you note this case here or open an issue so that we can investigate it? Ideally, we shouldn't lose any information due to conversions done by TF CLI or us. Noting it down somewhere would help us know what to fix without trying again.