Updating the Radius installation step of the long-haul workflow

Signed-off-by: ytimocin <[email protected]>

.github/workflows/long-running-azure.yaml

@@ -368,6 +368,12 @@ jobs:
           export PATH=$GITHUB_WORKSPACE/bin:$PATH
           which rad || { echo "cannot find rad"; exit 1; }
 
+          echo "*** Uninstalling existing Radius installation ***"
+          rad uninstall kubernetes
+
+          echo "*** Deleting radius-system namespace ***"
+          kubectl delete namespace radius-system --ignore-not-found
+
           echo "*** Installing Radius to Kubernetes ***"
           rad install kubernetes --reinstall \
             --chart ${{ env.RADIUS_CHART_LOCATION }} \
@@ -388,10 +394,6 @@ jobs:
           rad env create ${{ env.RADIUS_TEST_ENVIRONMENT_NAME }} --namespace default
           rad env switch ${{ env.RADIUS_TEST_ENVIRONMENT_NAME }}
 
-          # Temporary workaround to fix the x509 certificate error in the controller.
-          # https://github.com/radius-project/radius/issues/6989
-          kubectl delete secrets controller-cert -n radius-system --ignore-not-found
-
           echo "*** Configuring Azure provider ***"
           rad env update ${{ env.RADIUS_TEST_ENVIRONMENT_NAME }} --azure-subscription-id ${{ secrets.INTEGRATION_TEST_SUBSCRIPTION_ID }} \
             --azure-resource-group ${{ env.AZURE_TEST_RESOURCE_GROUP }}