issue-3719: Fix for http task stuck due to NPE

[saksham2105]

Pull Request type

• Bugfix
• Feature
• Refactoring (no functional changes, no api changes)
• Build related changes (Please run ./gradlew generateLock saveLock to refresh dependencies)
• WHOSUSING.md
• Other (please describe):

NOTE: Please remember to run ./gradlew spotlessApply to fix any format violations.

Changes in this PR

Implemented the incorrect or empty methods implementation in the DummyPayloadStorage class, such as getLocation(), upload(), and download(). These methods now utilize Disk based approach to store and retrieve data. Prior to this implementation, these methods were either empty or returning null, which led to NullPointerExceptions and caused HTTP workers to become stuck

Alternatives considered

Describe alternative implementation you have considered

We can create another Storage class and change the default value of conductor.external-payload-storage.type property pointing to that class, right now value of conductor.external-payload-storage.type is dummy and this-code is conditionally creating DummyPayloadStorage bean

[manan164]

Hi @saksham2105 , Please add tests for this change.

[saksham2105]

Hi @manan164 , I have added the Unit testcases and tested locally