Use westus as default region in test resource deployments (Azure#22309)

Co-authored-by: Ben Broderick Phillips <bebroder@microsoft.com>

Author: azure-sdk

eng/common/TestResources/New-TestResources.ps1

@@ -401,7 +401,7 @@ try {
     # string.
     if (!$Location) {
         $Location = @{
-            'AzureCloud' = 'westus2';
+            'AzureCloud' = 'westus';
             'AzureUSGovernment' = 'usgovvirginia';
             'AzureChinaCloud' = 'chinaeast2';
             'Dogfood' = 'westus'
@@ -907,7 +907,7 @@ This is used for CI automation.
 Optional location where resources should be created. If left empty, the default
 is based on the cloud to which the template is being deployed:
 
-* AzureCloud -> 'westus2'
+* AzureCloud -> 'westus'
 * AzureUSGovernment -> 'usgovvirginia'
 * AzureChinaCloud -> 'chinaeast2'
 * Dogfood -> 'westus'

eng/common/TestResources/New-TestResources.ps1.md

@@ -422,7 +422,7 @@ Optional location where resources should be created.
 If left empty, the default
 is based on the cloud to which the template is being deployed:
 
-* AzureCloud -\> 'westus2'
+* AzureCloud -\> 'westus'
 * AzureUSGovernment -\> 'usgovvirginia'
 * AzureChinaCloud -\> 'chinaeast2'
 * Dogfood -\> 'westus'

eng/common/TestResources/README.md

@@ -49,7 +49,7 @@ ${env:KEYVAULT_CLIENT_ID} = '<<secret>>'
 ${env:KEYVAULT_CLIENT_SECRET} = '<<secret>>'
 ${env:KEYVAULT_SUBSCRIPTION_ID} = 'YOUR SUBSCRIPTION ID'
 ${env:KEYVAULT_RESOURCE_GROUP} = 'rg-myusername'
-${env:KEYVAULT_LOCATION} = 'westus2'
+${env:KEYVAULT_LOCATION} = 'westus'
 ${env:KEYVAULT_SKU} = 'premium'
 ${env:AZURE_KEYVAULT_URL} = '<<url>>'
 ```