fix: remove unwanted 'main' component from kubernetes apt repo

Author: deepakt7340

modules/enableit/eit_repos/manifests/apt/kubernetes.pp

@@ -13,6 +13,7 @@
       architecture => 'amd64',
       # NOTE: empty string is on purpose, since all k8s package works for all distros
       release      => '',
+      repos        => '',
       key          => {
         'name'   => "kubernetes_${version}.gpg",
         'source' => 'puppet:///modules/eit_repos/apt/kubernetes-apt-keyring.gpg',