Clean up ~/.ssh/known_hosts

Signed-off-by: Jason Rothstein <fdragon@fdragon.org>

known_hosts.yml

@@ -0,0 +1,15 @@
+---
+- name: 'all'
+  hosts: 'all'
+  gather_facts: false
+  serial: 1
+  tasks:
+    - name: 'Remove known_host file entries'
+      delegate_to: 'localhost'
+      ansible.builtin.shell:
+        ssh-keygen -f ~/.ssh/known_hosts -R {{ inventory_hostname }}
+    - name: 'Add known_hosts file entries'
+      delegate_to: 'localhost'
+      ansible.builtin.shell:
+        ssh-keyscan {{ inventory_hostname }} >> ~/.ssh/known_hosts
+...