Fix get_host_variables for system tests

[Rebits]

Description

This PR addresses the get_host_variables method to prevent potential system test failures. The resolution of the KeyError issue can be found in the following link: PR #4954.

Testing performed

OneManagerAgent.zip

Note

This fix has only been tested in a one_manager_agent environment for system tests. However, it should address failures across all environments with this improvement.

Furthermore, it has been verified that end-to-end (E2E) tests retain access to the inventory data following this adjustment.

In [8]: hm.get_host_variables('agent1')['os_name']
Out[8]: 'linux'

In [9]: hm.get_host_variables('agent2')['os_name']
Out[9]: 'windows'

In [10]: hm.get_host_variables('agent3')['os_name']
Out[10]: 'linux'

In [11]: hm.get_host_variables('agent4')['os_name']
Out[11]: 'linux'

[pro-akim]

Review Notes

LGTM

Tested:
agentless.zip