Add more error detail to the service module for FreeBSD

library/system/service

@@ -790,9 +790,11 @@ class FreeBsdService(Service):
                 self.rcconf_file = rcfile
 
         rc, stdout, stderr = self.execute_command("%s %s %s %s" % (self.svc_cmd, self.name, 'rcvar', self.arguments))
+        cmd = "%s %s %s %s" % (self.svc_cmd, self.name, 'rcvar', self.arguments)
         rcvars = shlex.split(stdout, comments=True)
+
         if not rcvars:
-            self.module.fail_json(msg="unable to determine rcvar")
+            self.module.fail_json(msg="unable to determine rcvar", stdout=stdout, stderr=stderr)
 
         # In rare cases, i.e. sendmail, rcvar can return several key=value pairs
         # Usually there is just one, however.  In other rare cases, i.e. uwsgi,
@@ -805,7 +807,7 @@ class FreeBsdService(Service):
                 break
 
         if self.rcconf_key is None:
-            self.module.fail_json(msg="unable to determine rcvar")
+            self.module.fail_json(msg="unable to determine rcvar", stdout=stdout, stderr=stderr)
 
         return self.service_enable_rcconf()