Remove all Vnet Peerings on delete all clusters

Tiltfile

@@ -520,13 +520,14 @@ def peer_vnets():
     return peering_cmd
 
 def clear_aks_vnet_peerings():
-    delete_peering_cmd = "; echo \"--------Clearing AKS VNETs Peerings--------\""
+    delete_peering_cmd = "; echo \"--------Clearing AKS MGMT VNETs Peerings--------\""
     delete_peering_cmd += "; az network vnet wait --resource-group ${AKS_RESOURCE_GROUP} --name ${AKS_MGMT_VNET_NAME} --created --timeout 180"
-    delete_peering_cmd += "; echo \" 1/2 ${AKS_MGMT_VNET_NAME} found \""
+    delete_peering_cmd += "; echo \" ${AKS_MGMT_VNET_NAME} found \""
 
-    # TODO: xargs: command line cannot be assembled, too long
-    delete_peering_cmd += "; az network vnet peering list --resource-group ${AKS_RESOURCE_GROUP} --vnet-name ${AKS_MGMT_VNET_NAME} --output tsv | xargs -I {} az network vnet peering delete --name {} --resource-group ${AKS_RESOURCE_GROUP} --vnet-name ${AKS_MGMT_VNET_NAME} --only-show-errors --output none"
-    delete_peering_cmd += "; echo \" 2/2 All peerings deleted in mgmt cluster's vnet ${AKS_MGMT_VNET_NAME}\""
+    # List all peering names and store them in an array
+    delete_peering_cmd += "; PEERING_NAMES=$(az network vnet peering list --resource-group ${AKS_RESOURCE_GROUP} --vnet-name ${AKS_MGMT_VNET_NAME} --query \"[].name\" --output tsv)"
+    delete_peering_cmd += "; for PEERING_NAME in ${PEERING_NAMES[@]}; do echo \"Deleting peering: ${PEERING_NAME}\"; az network vnet peering delete --name ${PEERING_NAME} --resource-group ${AKS_RESOURCE_GROUP} --vnet-name ${AKS_MGMT_VNET_NAME}; done"
+    delete_peering_cmd += "; echo \"All VNETs Peerings deleted in ${AKS_MGMT_VNET_NAME}\""
 
     return delete_peering_cmd