Merge branch 'known_hosts' into 'master'

Create ssh_known_hosts directly from host keys

Closes #46

See merge request openappstack/bootstrap!35

ansible/roles/setup/tasks/main.yml

 ---
 
+# `rke up` needs to ssh into localhost so we need to configure
+# ssh access
+- name: Get master ssh-rsa public hostkey
+  tags:
+    - ssh
+  command: cut -d" " -f 1-2 /etc/ssh/ssh_host_rsa_key.pub
+  register: master_rsa_pub_hostkey
+
 - name: Create /oas/config/ssh_known_hosts
   tags:
     - ssh
-  lineinfile:
+  copy:
     dest: /oas/config/ssh_known_hosts
-    create: yes
-    state: present
-    line: "{{ lookup('pipe', 'ssh-keyscan -trsa ' + ip_address) }}"
+    content: "{{ ip_address }} {{ master_rsa_pub_hostkey.stdout }}"
 
 - name: Build Cluster
   tags: