Updated Rooms Live Test SDK to use PPE (Azure#28335)

### Packages impacted by this PR
None

### Issues associated with this PR
INT environment was used to run ACS Rooms Live Test SDK. However, the
resource is actually from PPE. Therefore, update it to use PPE
environment.

### Describe the problem that is addressed by this PR
Updated Rooms Live Test SDK to use PPE instead of INT environment

### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?
None

### Are there test cases added in this PR? _(If not, why?)_


### Provide a list of related PRs _(if any)_


### Command used to generate this PR:**_(Applicable only to SDK release
request PRs)_

### Checklists
- [ ] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [ ] Added a changelog (if necessary)

sdk/communication/communication-rooms/tests.yml

@@ -17,13 +17,6 @@ stages:
           SubscriptionConfigurations:
             - $(sub-config-communication-ppe-test-resources-common)
             - $(sub-config-communication-ppe-test-resources-js)
-        Int:
-          SubscriptionConfigurations:
-            - $(sub-config-communication-int-test-resources-common)
-            - $(sub-config-communication-int-test-resources-js)
-            - $(communication-livetest-rooms-int)
-          MatrixFilters:
-            - TestType=^(?!browser).*
-      Clouds: Public,Int
+      Clouds: Public,PPE
       TestResourceDirectories:
         - communication/test-resources/