V-38671: Remove sendmail

Change-Id: I5c909d6d923c5b13795bd0f35437b20f3be83657

defaults/main.yml

@@ -46,6 +46,7 @@ disable_services:
 remove_services:
   rsh-server: yes                                 # V-38591
   ldap-server: yes                                # V-38627
+  sendmail: yes                                   # V-38671
   telnet_server: yes                              # V-38587
   tftp-server: yes                                # V-38606
   xinetd: yes                                     # V-38584

doc/source/developer-notes/V-38671.rst

@@ -0,0 +1,9 @@
+Although neither Ubuntu nor openstack-ansible install or configure sendmail
+by default, the Ansible task will remove the sendmail package if it exists on
+the system.
+
+To opt-out of this change, adjust the following Ansible variable to ``no``:
+
+.. code-block:: yaml
+
+    remove_services['sendmail']: no

tasks/services.yml

@@ -128,3 +128,13 @@
     - services
     - cat3
     - V-38627
+
+- name: V-38671 - Remove sendmail
+  apt:
+    name: sendmail
+    state: absent
+  when: remove_services['sendmail'] | bool
+  tags:
+    - services
+    - cat2
+    - V-38671