kubernetes: duplicate metrics collector registration attempted

What happened:

The following error messages were found in the Kubernetes API server and controller manager logs:

E0423 17:35:58.491576       1 prometheus.go:138] failed to register depth metric admission_quota_controller: duplicate metrics collector registration attempted
E0423 17:35:58.491625       1 prometheus.go:150] failed to register adds metric admission_quota_controller: duplicate metrics collector registration attempted
E0423 17:35:58.491901       1 prometheus.go:162] failed to register latency metric admission_quota_controller: duplicate metrics collector registration attempted
E0423 17:35:58.492191       1 prometheus.go:174] failed to register work_duration metric admission_quota_controller: duplicate metrics collector registration attempted
E0423 17:35:58.492367       1 prometheus.go:189] failed to register unfinished_work_seconds metric admission_quota_controller: duplicate metrics collector registration attempted
E0423 17:35:58.492507       1 prometheus.go:202] failed to register longest_running_processor_microseconds metric admission_quota_controller: duplicate metrics collector registration attempted

These appear to be for deprecated metrics (https://github.com/kubernetes/kubernetes/pull/71300) noted in https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.14.md.

What you expected to happen:

No duplicate metrics collector registration attempted error messages in the API server or controller manager logs.

How to reproduce it (as minimally and precisely as possible):

Deploy a Kubernetes version 1.14 cluster and review API server or controller manager logs.

Anything else we need to know?:

No.

Environment:

• Kubernetes version (use kubectl version): 1.14.1
• Cloud provider or hardware configuration: IBM Cloud
• OS (e.g: cat /etc/os-release): Ubuntu 16.04.6 LTS
• Kernel (e.g. uname -a): 4.4.0-145-generic
• Install tools: Custom
• Network plugin and version (if this is a network-related bug): N/A
• Others: N/A