Added support to parse extra hosts

[Athishpranav2003]

This PR addresses this missing feature.

Fixes #1366

[Athishpranav2003]

The code was tested manually and all information is available in the issue itself.

[p12tic]

Looks good, but needs a release note and an integration test. I think adding example.internal:127.0.0.1 should work for ping - the test can then check if ping output is expected.

[p12tic]

Marking as "requested changes" for myself.

[Athishpranav2003]

@p12tic do u need me to write the test as well?

[p12tic]

@p12tic do u need me to write the test as well?

Yes. There are a lot of existing integration tests that you can look into for ideas.

[Athishpranav2003]

@p12tic ping is a privileged process, hence it needs more permissions to run --cap-add=NET_RAW. I am falling back to curl itself

[Athishpranav2003]

@p12tic done added integration testing

[p12tic]

A release note still missing (see newsfragments directory). Also the branch currently contains two commits, these should be squashed.

[Athishpranav2003]

@p12tic done,
not sure abt the PR check fail tho

[Athishpranav2003]

@p12tic when is the next release planned?