add .lck to default exclude

src/main/resources/omt-package-config.properties

@@ -7,7 +7,7 @@
 # List of regex pattern (separated by ";") of files to exclude when
 # generating an OMT package. (default: "\\.(zip|bak|omt|repositories)$")
 # (note that the '\' must be escaped to be interpreted correctly)
-exclude-pattern=\\.(zip|bak|omt|repositories)$
+exclude-pattern=\\.(zip|bak|omt|lck|repositories)$
 
 # If set to true, the folder containing the exported OMT will be
 # displayed. (default: false)