Fixed http2 parsing several bugs

[guyarb]

What does this PR do?

1. Fixed the wrong path size bug in the http2 path name
2. Fixed wrong condition in http2 entrypoint
3. Fixed wrong status code

Motivation

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[bits-bot]

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15 out of 16 committers have signed the CLA.

✅ vickenty
✅ juliogreff
✅ safchain
✅ spikat
✅ xornivore
✅ paulcacheux
✅ guyarb
✅ ajgajg1134
✅ coignetp
✅ wiyu
✅ nplanel
✅ ahmed-mez
✅ dependabot[bot]
✅ derekwbrown
✅ blt
❌ Slavek Kabrda

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