Add known_hosts support

Signed-off-by: Paul Belanger <pabelanger@redhat.com>

defaults/main.yaml

@@ -21,3 +21,6 @@ ssh_key_private_filename: id_rsa
 
 ssh_key_public_content:
 ssh_key_public_filename: id_rsa.pub
+
+ssh_known_hosts_content:
+ssh_known_hosts_filename: known_hosts

tasks/config.yaml

@@ -20,6 +20,15 @@
     owner: "{{ ssh_user_name }}"
     state: directory
 
+- name: Create ssh known_hosts file.
+  copy:
+    content: "{{ ssh_known_hosts_content }}"
+    dest: "{{ ssh_user_home }}/.ssh/{{ ssh_known_hosts_filename }}"
+    group: "{{ ssh_user_group }}"
+    mode: 0644
+    owner: "{{ ssh_user_name }}"
+  when: ssh_known_hosts_content
+
 - name: Create ssh private key.
   copy:
     content: "{{ ssh_key_private_content }}"