Add DNS requirement for kubernetes and helm.

`helm init` is being execute before networking and DNS is properly
configured in the controller. A dependency was added to kubernetes
to setup DNS, helm manifest was updated to depend on kubernetes.

Also, the `--skip-refresh` flag was added to helm init for second
controller to avoid timeout scenarios on proxy enviroments.

Closes-Bug: 1814968

Change-Id: I65759314b3a861e7fdb428889aa5f5c1c7037661
Suggested-by: Mingyuan Qi <mingyuan.qi@intel.com>
Signed-off-by: Erich Cordoba <erich.cordoba.malibran@intel.com>

puppet-manifests/src/modules/platform/manifests/helm.pp

@@ -76,9 +76,12 @@ class platform::helm
         }
 
       } else {
-        exec { 'initialize helm':
+
+        Class['::platform::kubernetes::master']
+
+        -> exec { 'initialize helm':
           environment => [ 'KUBECONFIG=/etc/kubernetes/admin.conf', 'HOME=/home/wrsroot' ],
-          command     => 'helm init --client-only',
+          command     => 'helm init --skip-refresh --client-only',
           logoutput   => true,
           user        => 'wrsroot',
           group       => 'wrs',

puppet-manifests/src/modules/platform/manifests/kubernetes.pp

@@ -16,10 +16,14 @@ class platform::kubernetes::kubeadm {
   $iptables_file = "net.bridge.bridge-nf-call-ip6tables = 1
     net.bridge.bridge-nf-call-iptables = 1"
 
+  # Ensure DNS is configured as name resolution is required when
+  # kubeadm init is run.
+  Class['::platform::dns']
+
   # Update iptables config. This is required based on:
   # https://kubernetes.io/docs/tasks/tools/install-kubeadm
   # This probably belongs somewhere else - initscripts package?
-  file { '/etc/sysctl.d/k8s.conf':
+  -> file { '/etc/sysctl.d/k8s.conf':
     ensure  => file,
     content => $iptables_file,
     owner   => 'root',