[CONFIG-325] Increase ldb download speeds

[zhou-hongyu]

• Replace aws-sdk-go with aws-sdk-go-v2
• Use concurrent downloading mechanism to download s3 snapshot with hardcoded concurrency configuration
• replace golang's gzip with klauspost/gizp

[asaf-erlich]

I know I may have asked this in our last 1-on-1, but do you have any benchmark / at least a snapshot of time of before / after this change? Even if you didn't profile the whole thing? If not should a separate PR be sent out first with just the metrics and then the change so the rough difference can be measured and observed?

[zhou-hongyu]

yes totally, the plan will be deploying to a ctlstore-beta node and validate the downloading speed via the dashboard I will circle back on this

[asaf-erlich]

yes totally, the plan will be deploying to a ctlstore-beta node and validate the downloading speed via the dashboard I will circle back on this

Sounds good