Add MRAP support for CRT s3transfer integration #9078
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This PR (previously #9076) patches a gap with SigV4a signing for the CRT S3 transfer manager. On performance-optimized instance types [list], the CRT will auto-enable itself for all high-level
aws s3
commands. This may lead to signature mismatches for Multi-Region Access Points backed by buckets in other regions.Customers currently encountering this issue can bypass the problem by setting
preferred_transfer_client
toclassic
(docs). That mitigation will no longer be needed after this patch is merged.