s3: fix if-match error (#7277)

* s3: fix if-match error

* add more checks

* minor

* minor

---------

Co-authored-by: chrislu <chris.lu@gmail.com>
Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com>

.github/workflows/test-s3-over-https-using-awscli.yml

@@ -77,3 +77,12 @@ jobs:
           aws --no-verify-ssl s3 cp --no-progress s3://bucket/test-multipart downloaded
           diff -q generated downloaded
           rm -f generated downloaded
+
+      - name: Test GetObject with If-Match
+        run: |
+          set -e
+          dd if=/dev/urandom of=generated bs=1M count=32
+          ETAG=$(aws --no-verify-ssl s3api put-object --bucket bucket --key test-get-obj --body generated | jq -r .ETag)
+          aws --no-verify-ssl s3api get-object --bucket bucket --key test-get-obj --if-match ${ETAG:1:32} downloaded
+          diff -q generated downloaded
+          rm -f generated downloaded