TT#44061 Always reload systemd daemon and preset all units

Previously 'systemd daemon-reload' and 'systemctl preset-all'
were executed only if changes detected in configs.
Otherwise the early exit happened if no .service files were triggered:
> DEBUG: No services file(s) reported - nothing to do.

Move the code into the function systed_daemon_reload_preset and
execute it on the top of the script. Also print info message
informing users about reloaded systemd and newly preset units.
It should provide better visibility here.

Change-Id: I992af9fb274ea93a37b812a51cebcd7af5c54133

scripts/services

@@ -97,6 +97,22 @@ execute() {
   ngcp-service queue-run
 }
 
+systed_daemon_reload_preset() {
+  if [ -d "/run/systemd/system" ]; then
+    log_info "Reloading systemd daemon and preset all services"
+
+    log_debug "systemd needs daemon-reload so the unit files loaded are in sync"
+    log_debug "Running: systemctl daemon-reload 2>&1 || true"
+    systemctl daemon-reload 2>&1 || true
+
+    log_debug "systemd needs preset-all to enable/disabe services (to start them on boot)"
+    log_debug "Running: rm -rf /etc/systemd/system/*.wants/ || true"
+    rm -rf /etc/systemd/system/*.wants/ || true
+    log_debug "Running: systemctl preset-all 2>&1 || true"
+    systemctl preset-all 2>&1 || true
+  fi
+}
+
 # main script
 
 DRYRUN='false'
@@ -109,6 +125,9 @@ elif [[ -n "${1:-}" ]] ; then
 fi
 log_debug "DRYRUN = $DRYRUN"
 
+log_debug "systed_daemon_reload_preset function"
+systed_daemon_reload_preset
+
 TMPFILE="$(mktemp)"
 log_debug "TMPFILE = $TMPFILE"
 
@@ -141,18 +160,6 @@ if ! [ -s "$TMPFILE" ] ; then
   exit 0
 fi
 
-if [ -d "/run/systemd/system" ]; then
-  log_debug "systemd needs daemon-reload so the unit files loaded are in sync"
-  log_debug "Running: systemctl daemon-reload 2>&1 || true"
-  systemctl daemon-reload 2>&1 || true
-
-  log_debug "systemd needs preset-all to enable/disabe services (to start them on boot)"
-  log_debug "Running: rm -rf /etc/systemd/system/*.wants/ || true"
-  rm -rf /etc/systemd/system/*.wants/ || true
-  log_debug "Running: systemctl preset-all 2>&1 || true"
-  systemctl preset-all 2>&1 || true
-fi
-
 log_debug "normalize_files function"
 normalize_files