Allow posting daemon service actions on the local daemon

'svcmgr --node <node>' was entering the cluster-wide logic when the
specified node is the local node, whereas it entered the crm logic for
other nodes.

Align behaviour to always enter the crm logic when --node is specified.

Example:

$ hostname
aubergine

$ sudo svcmgr -s ha1 stop --node aubergine
            INFO    request action 'stop --daemon' on node aubergine
 ip#1       INFO    skip 'stop' on standby resource (--force to override)
 ip#0       INFO    128.0.0.2 is already down on lo

lib/svc.py

@@ -2181,7 +2181,7 @@ def print_config_mtime(self):
         print(mtime)
 
     def async_action(self, action, wait=None, timeout=None):
-        if self.options.node and self.options.node != rcEnv.nodename:
+        if self.options.node is not None and self.options.node != "":
             cmd = sys.argv[1:]
             cmd = drop_option("--node", cmd, drop_value=True)
             cmd = drop_option("-s", cmd, drop_value=True)