Cache update in case if config_file cli option is passed

[abhijeetkaurav1st]

take care of version validation and update changes if config file is supplied during cli switches. (As version cache will be from existing context. ) Either update or remove version completely from cache

Originally posted by @abhijeetkaurav1st in https://github.com/nutanix/calm-dsl/issues/115#issuecomment-687270400