Update Azure Arc logging agent

[nilekhc]

Update amacoreagent from pipelineagent.azurecr.io/amacoreagent to linuxgeneva-microsoft.azurecr.io/amacoreagentaot as the first is no longer supported.

The Amacoreagent used for forwarding logs had improper versioning initially. Version 3.0 was an arbitrary designation before the team began releasing images with appropriate versioning.

The problem arose in version 3.0 where the agent in the Arc extension was making multiple calls to one of the management APIs (specifically, fetching configuration) within an hour when it was intended to be invoked only once. This behavior adversely impacted the health of the Mdsd service responsible for sending logs to Geneva. However, in the corrected version 1.2+, this issue has been addressed and resolved.