Hello Loki team,

First and foremost, thank you so much for Loki! It's awesome.

Is your feature request related to a problem? Please describe.
As a cluster administrator, when installing loki-stack
I want to be able to set toleration for promtail
So that I may forward logs from all nodes, even nodes with taint, to loki

Describe the solution you'd like
I would like to be able to

What would you like to be added:
statefulset/cloneset/sidecarset/job need to add metric with replica, available, unavailable, complete, number of resource .....

Why is this needed:
For example, Deploy has kube-state-metric, which can provide the metric, so we can well count and monitor it in Prometheus. Kruise'