revise livetest for connectedkubernetes (#21497)

* revise live test

* revise code

Author: Nickcandy

src/ConnectedKubernetes/LiveTests/TestLiveScenarios.ps1

@@ -1,9 +1,13 @@
-Invoke-LiveTestScenario -Name "Test ConnectedKubernetes" -Description "Test New-AzConnectedKubernetes" -Platform "Windows" -ScenarioScript `
+Invoke-LiveTestScenario -Name "Test ConnectedKubernetes" -Description "Test AzConnectedKubernetes" -Platform "Linux" -ScenarioScript `
 {
     param ($rg)
     $rgName = $rg.ResourceGroupName
     $ckName = New-LiveTestResourceName
-    kind create cluster --name $ckName
+    wget https://get.helm.sh/helm-v3.6.3-linux-amd64.tar.gz
+    tar -zxvf helm-v3.6.3-linux-amd64.tar.gz
+    sudo cp linux-amd64/helm /usr/local/bin/
+    helm version
+    minikube start
     $ckLocation = "westus"
     $actual = New-AzConnectedKubernetes -ClusterName $ckName -ResourceGroupName $rgName -Location $ckLocation
     Assert-AreEqual $ckName $actual.Name