aws: sts_credentials: make STS response parsing less brittle by check…

[PettitWesley]

…ing for the full XML end node

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Testing
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• Example configuration file for the change
• Debug log output from testing the change

• Attached Valgrind output that shows no leaks or memory corruption was found

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• Run local packaging test showing all targets (including any new ones) build.
• Set ok-package-test label to test for all targets (requires maintainer to do).

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Backporting

• Backport to latest stable release.

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Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

[PettitWesley]

Has not been tested thoroughly yet.

[PettitWesley]

Tested by running STS cred unit test under valgrind. And tested with this config:

[INPUT]
    Name dummy
    Tag dummy

[OUTPUT]
    Name  kinesis_firehose
    Match *
    region cn-north-1
    delivery_stream PUT-S3-vNRcC
    role_arn arn:aws-cn:iam::222222222222222:role/firehose-external-id
    external_id external-id-test

[github-actions]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[PettitWesley]

released in AWS Distro