Default option filter now includes weeklies to prevent empty chains (#9162)

* Return weekly contracts if no standard contracts exist

* Fix unit and regression tests

* Centralize default expiration type flags

* Add ExcludeWeeklys() method

* Mark IncludeWeeklys() as obsolete since weeklies are now default

Algorithm.Python/OptionStrategyFactoryMethodsBaseAlgorithm.py

@@ -27,7 +27,7 @@ class OptionStrategyFactoryMethodsBaseAlgorithm(QCAlgorithm):
         option = self.add_option("GOOG")
         self._option_symbol = option.symbol
 
-        option.set_filter(-2, +2, 0, 180)
+        option.set_filter(lambda u: u.standards_only().strikes(-2, +2).expiration(0, 180))
 
         self.set_benchmark("GOOG")