[Bug]: obagent config mismatch for standalone and service mode cluster

[chris-sun-star]

Describe the bug

obagent uses the ip address configured with monagent.host.ip to query metrics from observer, but for cluster deployed with standalone or service mode, the address of observer is not the same as the pod, obagent will get empty result for some queries which are using the ip address to filter results

Environment

obcluster deployed with standalone or service modeand with obagent deployed as sidecar

Fast reproduce steps

deploy an obcluster with standalone or service mode, try to get metric ob_server_resource_disk_bytes

Expected behavior

the metric is returned

Actual behavior

the metric is not returned

Additional context

No response

[chris-sun-star]

#605

[chris-sun-star]

require compatible obagent image, oceanbase/obagent:4.2.2-100000042024011120 or later