Add a system test to check acceptance of agents with higher version

[vikman90]

Target version	Related issue	Related PR/dev branch
	https://github.com/wazuh/wazuh/issues/18138

Description

The issue above asks for the agent version accepting filter to be optional. We need to check this feature.

Configurations

The configuration is shown at https://github.com/wazuh/wazuh/issues/18138.

Proposed test cases

Let this case list be a suggestion:

With <allow_higher_versions> set to yes:

• [ ] The manager shall accept agents with version< manager (4.5.2).
• [ ] The manager shall accept agents with version = manager (4.6.0).
• [ ] The manager shall accept agents with minor = manager and patch > manager (4.6.1).
• [ ] The manager shall accept agents with minor > manager (4.7.0).

With <allow_higher_versions> set to no:

• [ ] The manager shall accept agents with version < manager (4.5.2).
• [ ] The manager shall accept agents with version = manager (4.6.0).
• [ ] The manager shall accept agents with minor = manager and patch > manager (4.6.1).
• [ ] The manager shall reject agents with minor > manager (4.7.0).

Considerations

In conclusion:

• With <allow_higher_versions> set to yes, the filter is disabled. Thus, all versions must be accepted.
• With <allow_higher_versions> set to no:
  • Older versions of agents are always accepted.
  • The same major.minor version is always allowed, no matter the patch version.
• The acceptance of higher major versions is unchecked (unknown).