Simplify SSH configuration

Now that the Vagrantfile supplies SSH port information to Ansible, we no
longer need to figure it out in Ansible. Also, since gather_facts (which
requires an SSH connection) is set to true in playbook.yml, one needs to
supply --extra-vars "ansible_port=22" on the commandline when
provisioning for the first time on real hardware, because the port is
hardcoded in the inventory file.

Vagrantfile

@@ -1,22 +1,29 @@
 Vagrant.require_version ">= 1.7.0"
+
 PORT = 19022
+
 Vagrant.configure(2) do |config|
   config.vm.network :forwarded_port, guest: PORT, host: PORT, id: "new_ssh"
+
   # If we are trying to SSH into the VM, we need to use the new port
   if ARGV[0] == "ssh"
       config.ssh.guest_port = PORT
   end
+
   config.vm.define "datacoop" do |datacoop|
     datacoop.vm.box = "ubuntu/focal64"
     datacoop.vm.hostname = "datacoop"
+
     datacoop.vm.provider "virtualbox" do |v|
       v.memory = 4096
     end
+
     datacoop.vm.provision "ansible" do |ansible|
       ansible.compatibility_mode = "2.0"
       ansible.playbook = "playbook.yml"
       ansible.ask_vault_pass = true
       ansible.verbose = "v"
+
       # If we are running the provision command, then we override the ansible_port
       if ARGV[0] == "provision"
         ansible.host_vars = {

roles/ubuntu_base/handlers/main.yml

@@ -1,5 +0,0 @@
----
-- name: Restart sshd
-  service:
-    name: sshd
-    state: restarted

roles/ubuntu_base/tasks/ssh-port.yml

@@ -1,24 +1,4 @@
 ---
-- name: Check if SSH port is already configured
-  wait_for:
-    port: 19022
-    host: "{{ ansible_host }}"
-    search_regex: "OpenSSH"
-    connect_timeout: 5
-    timeout: 10
-  become: false
-  delegate_to: localhost
-  ignore_errors: true
-  register: ssh_configured
-
-# If running in Vagrant, ansible_port is always 2222
-- name: Change Ansible port to 22 if needed
-  set_fact:
-    ansible_port: 22
-  when: ssh_configured is defined and
-        ssh_configured.state is undefined and
-        ansible_port != 2222
-
 - name: Change SSH port on host
   lineinfile:
     dest: "/etc/ssh/sshd_config"
@@ -26,13 +6,16 @@
     line: "Port 19022"
   register: ssh_changed
   notify: "Restart sshd"
-  when: ssh_configured is defined and
-        ssh_configured.state is undefined
 
-- name: Ensure sshd is reloaded if needed
-  meta: flush_handlers
+- name: Restart sshd
+  service:
+    name: sshd
+    state: restarted
+  when: ssh_changed is defined and
+        ssh_changed.changed
 
 - name: Change Ansible port to 19022
   set_fact:
     ansible_port: 19022
-  when: ssh_changed is defined
+  when: ssh_changed is defined and
+        ssh_changed.changed