Add retries to ECR login step (#65013)
Summary:
Switch retry mode from `legacy` to `standard` (https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-retries.html#cli-usage-retries-configure) and up the number of retries.
Fixes #{issue number}
Pull Request resolved: https://github.com/pytorch/pytorch/pull/65013
Reviewed By: zhouzhuojie, mruberry
Differential Revision: D30943292
Pulled By: driazati
fbshipit-source-id: 0a21e9b4eacbb77e6aca22f9256d94cd591b23cd
