[receiver/splunkhec] Accepts query param for raw path

[timannguyen]

Description:

HEC raw accepts sourcetype, source, and index query params.

Link to tracking Issue: #19221

Testing: Unit test validating params

Documentation: None, as this ensure feature parity with splunk's documentation of HEC raw

[atoulme]

Please resolve conflicts and make sure to create a changelog entry under .chloggen. Thanks!

[runforesight]

Foresight Summary

    
Major Impacts

build-and-test duration(44 minutes 44 seconds) has decreased 18 minutes 41 seconds compared to main branch avg(1 hour 3 minutes 25 seconds).

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✅  check-links workflow has finished in 47 seconds (40 seconds less than main branch avg.) and finished at 15th Mar, 2023.

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✅  e2e-tests workflow has finished in 14 minutes 33 seconds and finished at 15th Mar, 2023.

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✅  build-and-test workflow has finished in 44 minutes 44 seconds (18 minutes 41 seconds less than main branch avg.) and finished at 15th Mar, 2023.

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⭕  build-and-test-windows workflow has finished in 3 seconds (41 minutes 8 seconds less than main branch avg.) and finished at 15th Mar, 2023.

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✅  changelog workflow has finished in 1 minute 31 seconds (49 seconds less than main branch avg.) and finished at 15th Mar, 2023.

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[atoulme]

Suggested change

//splunk metadata

[atoulme]

@zpzhuSplunk is correct, we need to use the configuration attribute names.

[splunkericl]

Latest version LGTM.