Add exponential backoff to bundler retries

[ChrisBr]

What was the end-user or developer problem that led to this PR?

Adding exponential backoff to bundler.

  Attempt 1: Initial try (no delay)
     ↓ fails
     Wait: 1.0 - 1.5 seconds (1.0s base + 0-0.5s jitter)
     ↓
  Attempt 2: First retry
     ↓ fails
     Wait: 2.0 - 2.5 seconds (2.0s base + 0-0.5s jitter)
     ↓
  Attempt 3: Second retry

Close #5361

What is your fix for the problem, implemented in this PR?

Close #5361

Make sure the following tasks are checked

• Describe the problem / feature
• Write tests for features and bug fixes
• Write code to solve the problem
• Make sure you follow the current code style and write meaningful commit messages without tags

[Edouard-chin]

I think we should extract this to its own method and test this solely, without the sleep part. There are existing tests were sleep is not stubbed and they are now going to take longer to run.

[ChrisBr]

Good point - made it configurable on a class level.