Cleanup known_hosts and host file

tasks/cleanup.yml

+---
+# file: cleanup.yml
+
+- name: "Remove host from known_hosts"
+  known_hosts:
+    name="{{ item }}"
+    state="absent"
+  with_items:
+    - '{{ static_ipv4|default(False) }}'
+    - '{{ host }}'
+
+- name: "Remove host from hosts file"
+  lineinfile:
+    dest=/etc/hosts
+    regexp='{{ item }}'
+    state=absent
+  sudo: yes
+  with_items:
+    - '^{{ static_ipv4|default(False) }} '
+    - '.*{{ host }}$'

tasks/inithost.yml

+---
+# file: inithost.yml
+
+- include: "cleanup.yml"

tasks/main.yml

@@ -2,3 +2,5 @@
 # file: roles/cloud/tasks/main.yml
 
 - include: "{{ cloud|default('none') }}/{{ mode }}.yml"
+
+- include: "{{ mode }}.yml"

tasks/removehost.yml

+---
+# file: removehost.yml
+
+- include: "cleanup.yml"
+  when: are_you_sure == "YES"