COD-3780 - Terraform minimal create, drop database

[richardantal]

also update coverage-threshold version

[github-actions]

Go test coverage: 30.5% for commit 917cec0

⚠️ 2 of 10 packages have zero coverage.

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

View coverage for all packages

# Package Name                                                      | Coverage
+ github.com/cloudera/terraform-provider-cdp/cdpacctest             |    28.0%
+ github.com/cloudera/terraform-provider-cdp/provider               |    78.7%
+ github.com/cloudera/terraform-provider-cdp/resources/datahub      |    27.5%
+ github.com/cloudera/terraform-provider-cdp/resources/datalake     |     2.8%
+ github.com/cloudera/terraform-provider-cdp/resources/environments |    47.3%
- github.com/cloudera/terraform-provider-cdp/resources/iam          |     0.0%
- github.com/cloudera/terraform-provider-cdp/resources/ml           |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/opdb         |     2.6%
+ github.com/cloudera/terraform-provider-cdp/utils                  |    43.8%
+ github.com/cloudera/terraform-provider-cdp/utils/test             |    80.0%