Description of problem:

Most of the metrics defined in the docs are not being exported and some are just declared for e.g.-

# HELP tekton_pipelines_controller_running_pipelineruns_count Number of pipelineruns executing currently
# TYPE tekton_pipelines_controller_running_pipelineruns_count gauge
tekton_pipelines_controller_running_pipelineruns_count 0 

Moreover, the Metrics specific labels are not being set on PipelineRuns.

Note: This is a finding from RHTAP staging cluster which has multiple namesapces and thousands of PipelineRuns.

Prerequisites (if any, like setup, operators/versions):

        Pipeline version - pipeline.tekton.dev/release: v0.44.2
        OSP operator version - 1.10.2
        apiVersion : v1

Steps to Reproduce

1. Deploy OSP-1.10.2 operator.
2. Do a `k port-forward -n openshift-pipelines service/tekton-pipelines-controller 9090`.
3. Search for the expected metrics at `localhost:9090/metrics`.

Actual results:

1. The Grfana dashboard shows no data for an arbitrary metric point. {}

Expected results:

  **  The data should show up in the dashboard since the concerned namespace `bnr-tenant` has sufficient pipelineruns.

Reproducibility (Always/Intermittent/Only Once):

Acceptance criteria: 

Definition of Done:

All the Metrics should be exported.

Build Details:

Additional info (Such as Logs, Screenshots, etc):

 *