use file content inline: !binary notation for base64 encoded content

based on discussion at
coreos/container-linux-config-transpiler#158 (comment)
ignition should support content translated from:
  inline: !binary |
     ${base64encoded}

Author: figo

master_templates-v1.10.0/master.yml

@@ -148,116 +148,101 @@ storage:
     - path: /etc/default/kube-apiserver
       filesystem: "root"
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ kube_apiserver }
   
     - path: /etc/default/kube-controller-manager
       filesystem: "root"
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ kube_controller_manager }
 
     - path: /etc/default/kube-scheduler
       filesystem: "root"
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ kube_scheduler }
 
     - path: /var/lib/kube-controller-manager/kubeconfig
       filesystem: "root"
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ kube_controller_manager_kubeconfig }
 
     - path: /var/lib/kube-scheduler/kubeconfig
       filesystem: "root"
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ kube_scheduler_kubeconfig }
 
     - path: /etc/srv/kubernetes/pki/ca-certificates.crt
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ ca }
 
     - path: /etc/srv/kubernetes/pki/ca-certificates.key
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ ca_key }
 
     - path: /etc/srv/kubernetes/pki/apiserver.crt
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ apiserver }
 
     - path: /etc/srv/kubernetes/pki/apiserver.key
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ apiserver_key }
 
     - path: /etc/srv/kubernetes/pki/controller.crt
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ controller }
 
     - path: /etc/srv/kubernetes/pki/controller.key
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ controller_key }
 
     - path: /etc/srv/kubernetes/pki/scheduler.crt
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ scheduler }
 
     - path: /etc/srv/kubernetes/pki/scheduler.key
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ scheduler_key }
 
     - path: /etc/srv/kubernetes/known_tokens.csv
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ known_tokens_csv }
 
     - path: /etc/srv/kubernetes/cloud-config
       filesystem: "root"
       mode: 0644
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ cloud_config_file }
 
     - path: /etc/systemd/resolved.conf.d/dns.conf
@@ -266,8 +251,7 @@ storage:
       user:
         name: "root"
       contents: 
-        base64: true
-        inline: |
+        inline: !binary |
           ${ dns_conf }
 
     - path: /etc/dhcp/dhclient.conf
@@ -276,8 +260,7 @@ storage:
       user:
         name: "root"
       contents:
-        base64: true
-        inline: |
+        inline: !binary |
           ${ dns_dhcp }
 
 

master_templates-v1.10.0/output.tf

@@ -1 +1,2 @@
 output "master_cloud_init" { value = "${ join("`", data.template_file.master.*.rendered) }" }
+output "debug_kube_apiserver" {value = "${ base64encode(var.dns_conf) }"}