confdb: run gofumpt looks like on confdb

[holmanb]

No description provided.

[holmanb]

Context: This change demonstrates at a small scale some of the kinds of changes that gofumpt produces. Non-functional changes are obviously a burden on any codebase, but the goal is that there would be a future ongoing benefit due to a more strictly standardized format. If gofumpt is incorporated into CI, this would result in less format-related review comments and less drift between projects that share code.

This change was created by running gofumpt -l -w confdb/.

related PR

fyi @miguelpires

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.49%. Comparing base (d95f2b9) to head (65556ae).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #16392   +/-   ##
=======================================
  Coverage   77.49%   77.49%           
=======================================
  Files        1342     1341    -1     
  Lines      183262   183255    -7     
  Branches     2438     2438           
=======================================
- Hits       142013   142008    -5     
- Misses      32646    32649    +3     
+ Partials     8603     8598    -5     

Flag	Coverage Δ
unittests	77.49% <ø> (+<0.01%)	⬆️

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[github-actions]

Mon Jan 5 18:02:19 UTC 2026
The following results are from: https://github.com/canonical/snapd/actions/runs/20719050821

Failures:

Executing:

• openstack:ubuntu-core-24-64:tests/core/services
• openstack:ubuntu-20.04-64:tests/main/snapshot-users

Restoring:

• openstack:ubuntu-20.04-64:tests/main/interfaces-cups-control
• openstack:ubuntu-20.04-64:tests/main/snapshot-users
• openstack:ubuntu-20.04-64:tests/main/
• openstack:ubuntu-20.04-64:
• openstack:ubuntu-20.04-64:tests/main/
• openstack:ubuntu-20.04-64:
• openstack:ubuntu-24.04-64:tests/main/nss-modules:winbind