It requires dependency to Environments
and it does not make sense without knowledge
of deployments.

This MR backports PrometheusMetric model to CE
and adds: common, identifier to figure out what kind of metric is used.

This MR backports PrometheusMetric model to CE
and adds: common, identifier to figure out what kind of metric is used.

Fix an error in docs about fetching artifacts using API

Closes gitlab-ce#50883

See merge request gitlab-org/gitlab-ee!7244