cadvisor choices

[Lukas-Heindl]

Hi, looking at the argument specs for cadvisor I noticed one weird thing.

ansible/roles/cadvisor/meta/argument_specs.yml

Line 29 in c7a8953

- "(default advtcp,cpu_topology,cpuset,hugetlb,memory_numa,process,referenced_memory,resctrl,sched,tcp,udp)"

mentions udp which according to https://github.com/google/cadvisor/blob/master/docs/storage/prometheus.md#prometheus-container-metrics really exists. Nonetheless the udp option is missing in the list of valid choices in

ansible/roles/cadvisor/meta/argument_specs.yml

Line 32 in c7a8953

choices: &metrics_choices

(and following lines)