Add ticker_interval support in strategy class

user_data/strategies/test_strategy.py

@@ -47,6 +47,9 @@ class TestStrategy(IStrategy):
     # This attribute will be overridden if the config file contains "stoploss"
     stoploss = -0.10
 
+    # Optimal ticker interval for the strategy
+    ticker_interval = 5
+
     def populate_indicators(self, dataframe: DataFrame) -> DataFrame:
         """
         Adds several different TA indicators to the given DataFrame