alloy: Support configurable retry_count and delay_duration variables

[f9n]

On installations with a large cluster, the wal replay time can take a long time when we restart. It would be great if we could configure these settings based on deployment size.

# roles/alloy/defaults/main.yml
retry_count: 3
delay_duration: 5

If it is convenient for you, we can create a pull request for the above changes.
cc: @emre-23 @acciorg

[voidquark]

I closed your PR because it is no longer relevant, as significant changes have been made to the role, which are detailed here: #280. Additionally, the retry and delay have been increased. Please let me know if this helps in your scenario.