Add in awslogs-create-group to ECS task logging (#3363)

Author: kddejong

src/cfnlint/data/schemas/extensions/aws_ecs_taskdefinition/logging_configuration.json

@@ -16,6 +16,7 @@
    "Options": {
     "propertyNames": {
      "enum": [
+      "awslogs-create-group",
       "awslogs-datetime-format",
       "awslogs-group",
       "awslogs-multiline-pattern",