Add integration test to check connection from jumpbox to hosts

[Adamkadaban]

Checklist

• I have added a version label to my PR (e.g., patch, minor, major).
• I have tested my changes locally and verified they work as expected.
• I have added relevant tests to cover my changes.
• I have made any necessary updates to the documentation.

Description

Add integration test to check connection from jumpbox to hosts using paramiko channels.

Fixes: #105

[Adamkadaban]

merging into monorepo branch for now since it might take a while for that PR

[Copilot]

Pull Request Overview

This PR adds an integration test to verify SSH connectivity from a jumpbox to all VMs in a range. The test validates that the jumpbox can successfully tunnel SSH connections to hosts with different operating systems using appropriate SSH usernames.

• Adds test_jumpbox_to_vm_connections method to test SSH tunneling through jumpbox to all VMs
• Creates OS_SSH_USERNAME_MAP mapping operating systems to their default SSH usernames
• Implements proper connection handling with cleanup for both jumpbox and target VM connections

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
api/tests/integration/api/v1/test_ranges.py	Adds comprehensive integration test for jumpbox-to-VM SSH connectivity with OS-specific username handling
api/src/app/enums/operating_systems.py	Adds SSH username mapping for all supported operating systems

[Adamkadaban]

no idea why integration tests are failing. they work perfectly on my machine

[alexchristy]

Looks great! Thank you for cleaning up my other test.

[alexchristy]

Also based on my quick research we should be able to extract the 'default' username from each of the deployed hosts using the correct terraform output configuration, so we don't have to maintain a lot of username maps in the future.

Issue for this here: #104