Add jitter for constant backoff

[pravj]

As you're answering questions, I've created this small PR for the jitter requirement.

Currently, it's adding a random time (<= MAX) to the given backoff time. We can discuss if you want a different way for this.

[pravj]

cc @rShetty

[rShetty]

@pravj Sorry for the delayed response, will be checking this today

[rShetty]

@pravj Thanks for this PR. Do you also want to add this jitter functionality for exponential backoff ?

[rShetty]

Also we need to the update the documentation of this change, thanks

[timusg]

@rShetty @pravj raised the PR for the Jitter functionality in the exponential backoff.

[rShetty]

@pravj @timusg Merging this. Will be adding documentation separately