Do not perform a systemd daemon-reload unless necessary

Co-authored-by: Nick <[email protected]>

tasks/main.yml

@@ -58,14 +58,17 @@
         dest: /etc/systemd/system/amazon-cloudwatch-agent.service.d/override.conf
         mode: 0644
         src: override.conf
+      register: copy_dropin_file
 
 # The AWS CloudWatch Agent systemd unit kicks off a process that
 # starts the CloudWatch Agent and then dies.  Therefore we can't start
 # it here because it will be started again during the idempotence test
 # and therefore will fail idempotence.
 - name: Enable AWS CloudWatch Agent
   ansible.builtin.systemd_service:
-    daemon_reload: true
+    # There is no need to perform a daemon-reload unless the config
+    # has changed.
+    daemon_reload: copy_dropin_file.changed
     enabled: true
     name: amazon-cloudwatch-agent