Add standard HTTP options to Prometheus package

[ChrsMark]

What does this PR do?

Adds standard HTTP options to Prometheus package.

Http options: module-http-config-options

Closes #496

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Reason: null

• Start Time: 2022-02-02T13:23:11.027+0000

• Duration: 17 min 54 sec

• Commit: afc394a

Test stats 🧪

Test	Results
Failed	0
Passed	15
Skipped	0
Total	15

🤖 GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

[tetianakravchenko]

LGTM!