fix no attribute stdout

tasks/deploy_certificate.yml

@@ -12,21 +12,21 @@
 - name: Generate SSH user certificate
   command:
     cmd: "ssh -o ConnectTimeout=3 -o ConnectionAttempts=2 {{ ssh_ca_host }} '{{ ssh_ca_script }} user {{ item.signing_key }} \"{{ key_pair.public_key }}\" {{ item.host }} \"{{ item.principals }}\"'"
-  register: certificate
+  register: user_cert
   delegate_to: localhost
   when: item.type == "user" and not cert_stat.stat.exists
 
 - name: Generate SSH host certificate
   command:
     cmd: "ssh -o ConnectTimeout=3 -o ConnectionAttempts=2 {{ ssh_ca_host }} '{{ ssh_ca_script }} host {{ item.signing_key }} \"{{ key_pair.public_key }}\" {{ item.host }}'"
-  register: certificate
+  register: host_cert
   delegate_to: localhost
   when: item.type == "host" and not cert_stat.stat.exists
 
 - name: Place certificate
   copy:
     dest: "/etc/ssh/{{ item.name }}-cert.pub"
-    content: "{{ certificate.stdout }}"
+    content: "{{ (item.type == 'user') | ternary(user_cert.stdout, host_cert.stdout) }}"
     mode: 0644
   when: not cert_stat.stat.exists