Disable eventd at buildtime for slim images
- Microsoft ADO **(number only)**:26386286
Add flags for disabling eventd and only copy rsyslog conf files when eventd is included and not slim image
Manual testing
With this PR in, you flap BGP and use events_tool to see the published events.
With telemetry PR #111 in and corresponding submodule update done in buildimage, one could run gnmi_cli to capture BGP flap events.