do not enable .service systemd unit if it has timer associated and

if has no installation config (WantedBy=, RequiredBy=, Also=, Alias=
settings in the [Install] section

files/image_config/hostcfgd/hostcfgd

@@ -48,9 +48,9 @@ def update_feature_state(feature_name, state, has_timer):
         start_cmds = []
         for suffix in feature_suffixes:
             start_cmds.append("sudo systemctl unmask {}.{}".format(feature_name, suffix))
-            start_cmds.append("sudo systemctl enable {}.{}".format(feature_name, suffix))
-        # If feature has timer associated with it, start corresponding systemd .timer unit
-        # otherwise, start corresponding systemd .service unit
+        # If feature has timer associated with it, start/enable corresponding systemd .timer unit
+        # otherwise, start/enable corresponding systemd .service unit
+        start_cmds.append("sudo systemctl enable {}.{}".format(feature_name, feature_suffixes[-1]))
         start_cmds.append("sudo systemctl start {}.{}".format(feature_name, feature_suffixes[-1]))
         for cmd in start_cmds:
             syslog.syslog(syslog.LOG_INFO, "Running cmd: '{}'".format(cmd))