feat(Storage): adding retry configuration example.

[piotrgradzinski]

Example on how to pass configuration related to retries to StorageClient and operations that include:

• retries
• retry strategy
• delay function
• calc delay function
• retry function

Fixes googleapis/google-cloud-php#8309.

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• storage/src/configure_retries.php:27, tag storage_configure_retries

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[bshaffer]

This is great! nice work! One small suggestion (and fixing the sample tag) and we can merge this!

Are these options dependent on googleapis/google-cloud-php#8489? If so, we can't merge this until that PR is merged and released, and we'll want to update storage/composer.json with the new minimum version

[piotrgradzinski]

Are these options dependent on googleapis/google-cloud-php#8489? If so, we can't merge this until that PR is merged and released, and we'll want to update storage/composer.json with the new minimum version

Yes, they are as I added some fixes and new params in aforementioned PR.

[bshaffer]

Yes, they are as I added some fixes and new params in aforementioned PR

So we'll need to wait until we release the next version of the Storage client library in googleapis/google-cloud-php#8520. Then, ideally, we'd update storage/composer.json in this repo to have a minimum of google/storage: 1.48.3

[piotrgradzinski]

@bshaffer looks like the new version is released - I've bumped dependency to v1.48.3.