Update BW internal injections to handle multiple trigger times

BayesWaveUtils/scripts/bayeswave_pipe

@@ -434,11 +434,16 @@ if cp.has_option('bayeswave_options','BW-inject'):
         print("Error: BW-inject must be in ", ['signal','glitch'], file=sys.stderr)
         sys.exit(1)
     # Perform internal injections drawn from the signal or glitch model
-    if opts.trigger_time is None:
-        opts.trigger_time=1126259462.392 
-    print("Setting trigger time to %f"%opts.trigger_time, file=sys.stdout)
-    trigger_list = pipe_utils.triggerList(cp, gps_times=opts.trigger_time,
-            internal_injections=True)
+    # Check if there's a defined trigger list of GPS times
+    if opts.trigger_list is not None:
+        trigger_list = pipe_utils.triggerList(cp, trigger_file=opts.trigger_list,
+      internal_injections=True)
+    else:
+      if opts.trigger_time is None:
+          opts.trigger_time=1126259462.392
+      print("Setting trigger time to %f"%opts.trigger_time, file=sys.stdout)
+      trigger_list = pipe_utils.triggerList(cp, gps_times=opts.trigger_time,
+              internal_injections=True)
 
 #    
 # GraceDB support