use exact regex expressions for test names

[anniehedgpeth]

Background

As with this change to the workflow in the Azure TFE module, I am removing the contains function to more strictly enforce the correct regex for the test you are choosing to run. This is due to the doubling up of tests since FDO and that they are similarly named.

How has this been tested?

The functionality worked in this PR, but I will test again post merge.

TFE Modules

Did you add a new setting?

No

[anniehedgpeth]

/help

Command	Description
/test <all|full-aws|full-azure|full-google|test case name...> [destroy=false]	Run the Terraform test workflow on the modules in the tests/ directory in each of the terraform-aws-terraform-enterprise, terraform-azurerm-terraform-enterprise, and terraform-google-terraform-enterprise module repositories. Unnamed arguments can be "all" to run all test cases, full-[aws|azure|google] to run all cloud specific cases, or specific test case names to only run selected cases. The named argument "destroy=false" will disable the destruction of test infrastructure for debugging purposes.
/destroy <all|full-aws|full-azure|full-google|test case name...>	Destroy any resources that may still be in Terraform state from previous tests. Unnamed arguments can be "all" to destroy all resources from all test cases, full-[aws|azure|google] to destroy all resources from cloud specific cases, or specific test case names to only destroy selected test case resources.
/help	Shows this help message