Kubernetes tests: increase the size of the VM from 700MB to 1.5GB

VMs were starving, many of the daemons were unable to complete their
tasks resulting in tests failures.

Turned off verbose output from k8s components as it consumes even more resources, and useful error messages actually drown in debug-clutter

Changed files
+1 -2
nixos
tests
+1 -1
nixos/tests/kubernetes/base.nix
···
{ config, pkgs, lib, nodes, ... }:
mkMerge [
{
-
virtualisation.memorySize = mkDefault 768;
+
virtualisation.memorySize = mkDefault 1536;
virtualisation.diskSize = mkDefault 4096;
networking = {
inherit domain extraHosts;
-1
nixos/tests/kubernetes/kubernetes-common.nix
···
featureGates = ["AllAlpha"];
flannel.enable = true;
addons.dashboard.enable = true;
-
verbose = true;
caFile = "${certs.master}/ca.pem";
apiserver = {