DWX-18776 Wait for dw aws cluster to become ready

[tevesz]

This change awaits the data warehouse aws cluster creation to finish and move the cluster to a Running or Error state.

[github-actions]

Go test coverage: 32.6% for commit edf69f1

⚠️ 2 of 13 packages have zero coverage.

• github.com/cloudera/terraform-provider-cdp/resources/de
• github.com/cloudera/terraform-provider-cdp/resources/ml

View coverage for all packages

# Package Name                                                        | Coverage
+ github.com/cloudera/terraform-provider-cdp/cdpacctest               |    26.9%
+ github.com/cloudera/terraform-provider-cdp/provider                 |    78.7%
+ github.com/cloudera/terraform-provider-cdp/resources/datahub        |    36.3%
+ github.com/cloudera/terraform-provider-cdp/resources/datalake       |     8.4%
- github.com/cloudera/terraform-provider-cdp/resources/de             |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/dw             |    83.3%
+ github.com/cloudera/terraform-provider-cdp/resources/dw/cluster/aws |    72.6%
+ github.com/cloudera/terraform-provider-cdp/resources/environments   |    45.7%
+ github.com/cloudera/terraform-provider-cdp/resources/iam            |     2.8%
- github.com/cloudera/terraform-provider-cdp/resources/ml             |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/opdb           |    25.3%
+ github.com/cloudera/terraform-provider-cdp/utils                    |    51.3%
+ github.com/cloudera/terraform-provider-cdp/utils/test               |    68.8%

[vcsomor]

LGTM! Thanks for this patch!