Retry logic for status notifications

In the event that the customer's web service is not available, we will attempt reconnects for a short period of time.

A brief overview of the retry logic is provided below:

• DNS Errors, 400 – 406 http error codes:
  3 retries within 10 min. (these error codes indicate a permanent fail) + jitter logic

• 407-499, 500-599 http error codes:
  About 13 retries within 45-50min. (these error codes indicate a temporary fail) + jitter logic