Correct processing of deprecated ignore_errors setting (#226)

* Correct processing of deprecated ignore_errors

* Fix broken settings test

Author: TimPansino

newrelic/config.py

@@ -398,6 +398,9 @@ def _process_configuration(section):
         section, "error_collector.max_event_samples_stored", "getint", None
     )
     _process_setting(section, "error_collector.capture_source", "getboolean", None)
+    _process_setting(
+        section, "error_collector.ignore_errors", "get", _map_split_strings
+    )
     _process_setting(
         section, "error_collector.ignore_classes", "get", _map_split_strings
     )
@@ -1873,6 +1876,13 @@ def _process_error_trace_configuration():
             if _config_object.has_option(section, "ignore_classes"):
                 ignore_classes = _config_object.get(section, "ignore_classes").split()
 
+            if _config_object.has_option(section, "ignore_errors"):
+                if _config_object.has_option(section, "ignore_classes"):
+                    _logger.info("Ignoring deprecated setting: ignore_errors. Please use new setting: ignore_classes.")
+                else:
+                    _logger.info("Deprecated setting found: ignore_errors. Please use new setting: ignore_classes.")
+                    ignore_classes = _config_object.get(section, "ignore_errors").split()
+
             if _config_object.has_option(section, "expected_classes"):
                 expected_classes = _config_object.get(section, "expected_classes").split()