Added support for context-aware indicators.

This way when a detection is logged, the user can know which STIX2
file was matched by the module

tests/ios/test_datausage.py

@@ -25,7 +25,7 @@ class TestDatausageModule:
         ind = Indicators(log=logging)
         ind.parse_stix2(indicator_file)
         # Adds a file that exists in the manifest.
-        ind.ioc_processes[0] = "CumulativeUsageTracker"
+        ind.ioc_files[0]["processes"].append("CumulativeUsageTracker")
         m.indicators = ind
         run_module(m)
         assert len(m.detected) == 2