static calibrate resource should not depend on prometheus data

[glorv]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

deploy a tidb cluster with tiup playground --without-minitor and run:

mysql> calibrate resource;
ERROR 1105 (HY000): There is no CPU quota metrics, query metric error: [domain:9009]Prometheus address is not set in PD and etcd

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiDB version? (Required)

nightly