inability to remember metrics

[nahratzah]

Overview of the Issue

Issue #5140 was closed, on the basis that #9198 addresses it.

Except, the issue #5140 mentions two problems:

1. Only changed metrics are initialized on Consul start
   (Which is addressed by Add metric definitions for all metrics known at Consul start #9198)
2. After prometheus_retention_time expires they also get removed
   (Which is not addressed.)

The change #9198 will initialize metrics at startup, only to forget them once prometheus_retention_time expires.

[dnephin]

The second problem should be fixed by hashicorp/go-metrics#120, which was included in Consul in 9d9c4a6.

Are you able to reproduce the problem with those changes?