squid: rgw_sigv4: handle '0;' as trailer-chunk boundary

[cbodley]

backport tracker: https://tracker.ceph.com/issues/64768

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backport of #55895
parent tracker: https://tracker.ceph.com/issues/64676

this backport was staged using ceph-backport.sh version 16.0.0.6848
find the latest version at https://github.com/ceph/ceph/blob/main/src/script/ceph-backport.sh

[mattbenjamin]

looks identical to me

[cbodley]

saw a java test failure in a batch that included this and #55871

2024-03-10T16:40:31.654 INFO:teuthology.orchestra.run.smithi060.stdout:suite > Object tests > ObjectTest.testObjectCreateBadExpectMismatch STARTED
2024-03-10T16:40:32.455 INFO:teuthology.orchestra.run.smithi060.stdout:
2024-03-10T16:40:32.455 INFO:teuthology.orchestra.run.smithi060.stdout:suite > Object tests > ObjectTest.testObjectCreateBadExpectMismatch FAILED
2024-03-10T16:40:32.455 INFO:teuthology.orchestra.run.smithi060.stdout:    com.amazonaws.services.s3.model.AmazonS3Exception at ObjectTest.java:525

i opened https://tracker.ceph.com/issues/64841 with a little more analysis

[cbodley]

i see that the tests set boolean useV4Signature = false; for all of these ObjectTest cases, and confirmed that the requests are using sigv2 Authorization headers. so while strange, it's surely unrelated to these changes

[cbodley]

jenkins test this please

[cbodley]

passed qa in https://pulpito.ceph.com/cbodley-2024-03-10_14:50:40-rgw-wip-cbodley2-testing-distro-default-smithi/

[cbodley]

/home/jenkins-build/build/workspace/ceph-pull-requests/build/src/seastar/gen/src/proto/metrics2.pb.h:17:2: error: This file was generated by an older version of protoc which is
#error This file was generated by an older version of protoc which is
^

[cbodley]

jenkins test make check

[cbodley]

The following tests FAILED:
7 - run-tox-mgr-dashboard-py3 (Failed)

[cbodley]

jenkins test windows

[cbodley]

jenkins test make check

[bhinz]

Is there any roadmap to backport this issue?