terraform: remove kubeconfig ConditionPathExists on kubelet.service

It has been added to the [Service] section which meant it had no effect.
Adding it to the right place (the [Unit] section) means
/etc/kubernetes/kubeconfig must exist the first time the Kubelet starts,
otherwise the unit is skipped and it never tries to start again.

This removes that directive: it's fine to have the kubelet try to start
again and again until the file exists.

assets/terraform-modules/aws/flatcar-linux/kubernetes/cl/controller.yaml.tmpl

@@ -64,7 +64,6 @@ systemd:
         [Unit]
         Description=Kubelet
         Wants=rpc-statd.service
-        ConditionPathExists=/etc/kubernetes/kubeconfig
         [Service]
         EnvironmentFile=/etc/kubernetes/kubelet.env
         ExecStartPre=/bin/mkdir -p /var/lib/kubelet/volumeplugins

assets/terraform-modules/controller/main.tf

@@ -7,7 +7,6 @@ systemd:
     - name: 10-controller.conf
       contents: |
         [Unit]
-        ConditionPathExists=/etc/kubernetes/kubeconfig
         [Service]
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/checkpoint-secrets
         ExecStartPre=/bin/mkdir -p /etc/kubernetes/inactive-manifests

assets/terraform-modules/node/templates/node.yaml.tmpl

@@ -26,7 +26,6 @@ systemd:
         [Unit]
         Description=Kubelet
         Wants=rpc-statd.service
-        ConditionPathExists=/etc/kubernetes/kubeconfig
         [Service]
         EnvironmentFile=/etc/kubernetes/kubelet.env
         ExecStartPre=/bin/mkdir -p /var/lib/kubelet/volumeplugins

assets/terraform-modules/packet/flatcar-linux/kubernetes/cl/controller.yaml.tmpl

@@ -101,7 +101,6 @@ systemd:
         Requires=coreos-metadata.service
         After=coreos-metadata.service
         Wants=rpc-statd.service
-        ConditionPathExists=/etc/kubernetes/kubeconfig
         [Service]
         EnvironmentFile=/run/metadata/flatcar
         EnvironmentFile=/etc/kubernetes/kubelet.env