Prevent systemd unit files to be created to restart services

This patch removes the code that create/modify Systemd unit files so the
services restart. We did it after Newton when we switched the services
to be managed under Systemd to automatically restart.

With containers, we don't want / need that anymore.
In Pike, Queens and Rocky, containers are restarted by the Docker
Engine.
In Stein, containers are restarted by Systemd (which restart podman
containers) but the unit files are now managed by Paunch.

To avoid weird behaviors, let's clean this up.

Change-Id: I82dca36b3c9ebf4243d270ac91ffbf6ad56d6ca6

manifests/profile/base/apache.pp

@@ -35,12 +35,6 @@ class tripleo::profile::base::apache(
   include ::apache::mod::status
   include ::apache::mod::ssl
 
-  # Automatic restart
-  ::systemd::dropin_file { 'httpd.conf':
-    unit    => 'httpd.service',
-    content => "[Service]\nRestart=always\n",
-  }
-
   if $enable_status_listener {
     if !defined(Apache::Listen[$status_listener]) {
       ::apache::listen {$status_listener: }

manifests/profile/base/memcached.pp

@@ -28,11 +28,5 @@ class tripleo::profile::base::memcached (
 ) {
   if $step >= 1 {
       include ::memcached
-
-      # Automatic restart
-      ::systemd::dropin_file { 'memcached.conf':
-        unit    => 'memcached.service',
-        content => "[Service]\nRestart=always\n",
-      }
   }
 }