Config validation for inj tisi file

gstlal-inspiral/python/config/inspiral.py

@@ -219,6 +219,9 @@ class Config(BaseConfig):
 		valiate for injection-related section
 		"""
 
+		if not self.injections.time_slide_file:
+			raise ValueError("time_slide_file not specified under injections section in config")
+
 		if not self.injections.filter:
 			raise ValueError("filter option is not set under injections section in config.")