[test] Re-add the 180 seconds sleep in lb-with-node-addition

We need this to allow the new node to come up

Signed-off-by: Moshe Vayner <moshe@vayner.me>

Author: moshevayner

e2e/test/lb-with-node-addition/chainsaw-test.yaml

@@ -82,6 +82,8 @@ spec:
               required_replicas=$((current_replicas + 1))
               KUBECONFIG=$MGMT_KUBECONFIG kubectl patch machinedeployment ${CLUSTER_NAME}-md-0 --type='merge' -p "{\"spec\":{\"replicas\":$required_replicas}}"
 
+              sleep 180
+
               nbid=$(KUBECONFIG=$KUBECONFIG NAMESPACE=$NAMESPACE LINODE_TOKEN=$LINODE_TOKEN ../scripts/get-nb-id.sh)
               echo "Nodebalancer ID: $nbid"