support config sidecar pod resource

[Frapschen]

Can we provide a way to config the sidecar container resource or set a default resource? In some scenes, the pod is requested to have a resource config, eg. a namespace with quota configured, every pod in the namespace need to have the config resource section.

example config:

--PodQuota=0.5c,512m

[sumo-drosiek]

Resolved in #552