Adding S3 API methods GetACL + GetCannedPolicyByAcl for getting ACL from bucket and object

[bieli]

In some cases in https://github.com/allegro/akubra supporting tool we need two methods:

• GetACL from bucket and objects
• GetCannedPolicyByAcl based on results from GetACL method for checking permissions in bucket/object

It's important part to developing our next Open Source solution. This is my proposal of solution for below functionality and new features in S3 goamz package. Please comment and testing my code.

[CLAassistant]

All committers have signed the CLA.

[alimoeeny]

@bieli thanks. Looks like there is a formatting issue. Please fix it and try this to double check.

$ FIXIT=$(go fmt ./...); if [ -n "${FIXIT}" ]; then FIXED=$(echo $FIXIT | wc -l); echo "gofmt - ${FIXED} file(s) not formatted correctly, please run gofmt to fix them:\n ${FIXIT} " && exit 1; fi

[alimoeeny]

Hi @bieli thanks for the update can you please sign the CLA?

[bieli]

@alimoeeny I sign th CLA and I don't know what means one not accepted check licence/cla — Waiting for status to be reported ? It's required to verify on your side ?

[alimoeeny]

@bieli something is wrong. I am trying to contact the gods, who have admin access to this repo (I don't) and see if I can get them to fix it or give me access to fix it.

[bieli]

@alimoeeny Any news about licence/cla status ?

[alimoeeny]

@bieli there is a workaround for now, sorry for the delay. Merged.