chore: split reconcile duration seconds into buckets

[yanksyoon]

Applicable spec: N/A

Overview

• Changes reconcile duration prometheus data histogram buckets into minute basis buckets.

Rationale

• Reconcile duration is not sub second. By default the buckets are split into sub-second groups. We want to group them into minute groups [60, 2 * 60, 5 * 60, 10 * 60, 15 * 60, float("inf")].

Juju Events Changes

Module Changes

Library Changes

Checklist

• The charm style guide was applied.
• The contributing guide was applied.
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex).
• The changelog is updated with changes that affects the users of the charm.

No user affecting changes.

[cbartz]

Can you add a line to the changelog, pls? Otherwise LGTM

[github-actions]

Test results for commit 477813c

Test coverage for 477813c

Wrote XML report to coverage/coverage.xml

Static code analysis report

Run started:2025-07-28 16:07:31.605187

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2024
  Total lines skipped (#nosec): 2
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 1

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[github-actions]

TICS Quality Gate

❌ Failed

The following errors have occurred during analysis:

❌ [ERROR 5333] Project database 'github-runner-operator' already is connected to a started TICSQServer process that has not registered a stop time. To avoid data corruption, analysis is aborted. Details of the other TICSQServer process: started at 2025-07-09 14:32:08.000 by user ubuntu.

.github/workflows/tics.yaml / TICS / TICS GitHub Action