Use python-based swidGenerator to generated SWID tags

conf/plugins/imc-swid.opt

@@ -1,2 +1,11 @@
 charon.plugins.imc-swid.swid_directory = ${prefix}/share
 	Directory where SWID tags are located.
+
+charon.plugins.imc-swid.swid_generator = /usr/local/bin/swid_generator
+	SWID generator command to be executed.
+
+charon.plugins.imc-swid.pretty = FALSE
+	Generate XML-encoded SWID tags with pretty indentation.
+
+charon.plugins.imc-swid.full = FALSE
+	Include file information in the XML-encoded SWID tags.