Not getting logs in app insights

## Which example? Describe the issue

example: online-endpoints-simple-deployment.ipynb

description:
My code is based on this notebook. However, I added the `app_insights_enabled` flag to the deployment variable in order to save logs generated in score.py to application insights. This doesn't work. I tried print statements and logging.info statements but I cannot see any of these entries in application insights of the deployment.

How can I solve this problem? Or what's the recommended way to save custom logging commands to an azure logging service?

Start with online-endpoints-simple-deployment.ipynb and compare the deployment variable's app_insights_enabled setting with the logging used in score.py. Reproduce the deployment and verify whether print and logging.info output appears in the deployment's Application Insights; done means the recommended custom logging path is documented or the example is corrected.

Written by the indexing model from the issue text.