CDPCP-12181 Azure Data Lake acceptance tests

[tevesz]

Creates a cdp credential using the Azure subscription properties. Provisions an environment and data lake with the terraform testing framework.
The new variables are added to the e2e testing infrastructure as environment variables.

This change also includes fixes to:

• fix flexible_server_subnet_ids issue where a resource update always reported this property as a changed property. The state should be used if the status is unknown.
• fix encryption_user_managed_identity null value change to empty string value. Provisioning failed if the property was not set. The property is not computed, using the empty state resulted caused this issue.

[github-actions]

Go test coverage: 35.5% for commit 2adc7b1

⚠️ 2 of 17 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                           |    14.3%
+ github.com/cloudera/terraform-provider-cdp/provider                             |    78.7%
+ github.com/cloudera/terraform-provider-cdp/resources/datahub                    |    35.8%
+ github.com/cloudera/terraform-provider-cdp/resources/datalake                   |     9.2%
- github.com/cloudera/terraform-provider-cdp/resources/de                         |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/dw/cluster/aws             |    71.9%
+ github.com/cloudera/terraform-provider-cdp/resources/dw/databasecatalog         |    65.8%
+ github.com/cloudera/terraform-provider-cdp/resources/dw/dataviz                 |    78.0%
+ github.com/cloudera/terraform-provider-cdp/resources/dw/virtualwarehouse/hive   |    77.7%
+ github.com/cloudera/terraform-provider-cdp/resources/dw/virtualwarehouse/impala |    70.2%
+ github.com/cloudera/terraform-provider-cdp/resources/environments               |    44.4%
+ github.com/cloudera/terraform-provider-cdp/resources/iam                        |     2.7%
- github.com/cloudera/terraform-provider-cdp/resources/ml                         |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/opdb                       |    25.4%
+ github.com/cloudera/terraform-provider-cdp/resources/recipe                     |    12.0%
+ github.com/cloudera/terraform-provider-cdp/utils                                |    56.1%
+ github.com/cloudera/terraform-provider-cdp/utils/test                           |    75.0%