feat: support docker container allowlist

[CedArctic]

This PR adds a whitelist feature for docker containers similar to that supported by the raw_cgroup_prefix_whitelist flag. The code is written in a way such that the same feature can be later added to other plugins (e.g podman, containerd etc).

Example use with Docker container IDs: --docker_id_prefix_whitelist=412a30bf29e6,82e3a4670a41,5f338e361e94

Summary of changes:

• cmd/cadvisor.go: Added docker_id_prefix_whitelist flag. Create a whiteLists map that aggregates all whitelists and pass it to the manager constructor (New()).
• manager/manager.go: Updated New() and manager{} to store the whiteLists map and pass it to the plugin initializer and the raw cgroups whitelist to raw.Register().
• container/factory.go: Updated InitializePlugins() to use whiteLists for every plugin registration function.
• container/*/plugin.go: Updated the plugin registration functions to receive the whitelists.
• container/docker/factory.go: Stored whitelist in dockerFactory{}, and updated CanHandleAndAccept() to filter based on the whitelist. The whitelist feature can be enabled for other plugins by modifying their factory.go files the same way.