lalapps/src/string: replace deprecated function

- glue.ligolw.lsctables.instrument_set_from_ifos() --> glue.ligolw.lsctables.instrumentsproperty.get()
Original: ac7dca1c7056afff281b2645cb4539bb14b0e66e

lalapps/src/string/lalapps_cosmicstring_pipe.py

@@ -174,7 +174,7 @@ overlap = short_segment_duration / 2 + 2 * pad	# FIXME:  correct?
 # get the instruments and raw segments
 #
 
-instruments = lsctables.instrument_set_from_ifos(config_parser.get('pipeline','ifos'))
+instruments = lsctables.instrumentsproperty.get(config_parser.get('pipeline','ifos'))
 seglists = ligolwsegments.segmenttable_get_by_name(utils.load_filename(options.segments_file, gz = (options.segments_file or "stdin").endswith(".gz"), verbose = options.verbose), options.segments_name).coalesce()
 # remove extra instruments
 for instrument in set(seglists) - instruments:

lalapps/src/string/lalapps_string_final.py

@@ -263,7 +263,7 @@ WHERE
 		""", (contents.bb_definer_id,)):
 			# likelihood ratio must be listed first to
 			# act as the sort key
-			record = (likelihood_ratio, contents.filename, coinc_event_id, dbtables.lsctables.instrument_set_from_ifos(instruments), peak_time)
+			record = (likelihood_ratio, contents.filename, coinc_event_id, dbtables.lsctables.instrumentsproperty.get(instruments), peak_time)
 			if likelihood_ratio is None:
 				# coinc got vetoed (unable to compute
 				# likelihood)