Increase the timeout for systemctl command execution

> Since systemd by itself has a 30 sec timeout, YaST should add some more
> seconds to allow for systemctl to exit gracefully even if it has a
> timeout and not just kill the systemctl command just one seconds before
> it would time out itself.

See https://bugzilla.suse.com/show_bug.cgi?id=1098910#c3

library/systemd/src/lib/yast2/systemctl.rb

@@ -21,7 +21,7 @@ def initialize(details)
     COMMAND_OPTIONS = " --no-legend --no-pager --no-ask-password ".freeze
     ENV_VARS        = " LANG=C TERM=dumb COLUMNS=1024 ".freeze
     SYSTEMCTL       = ENV_VARS + CONTROL + COMMAND_OPTIONS
-    TIMEOUT         = 30 # seconds
+    TIMEOUT         = 40 # seconds
 
     class << self
       BASH_SCR_PATH = Yast::Path.new(".target.bash_output")