daemon: rename confdb API to /v2/confdbs/...

[miguelpires]

This reverts commit 8a2f81e to make the confdb API singular to give the impression of accessing a single configuration database.

[github-actions]

Wed Jan 29 16:05:07 UTC 2025
The following results are from: https://github.com/canonical/snapd/actions/runs/13028572142

Failures:

Preparing:

• openstack:debian-12-64:tests/unit/
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64:tests/main/xdg-open-portal

Executing:

• openstack:debian-12-64:tests/main/refresh:classic_fake
• openstack:debian-sid-64:tests/main/snap-sign:stdin
• openstack:opensuse-tumbleweed-64:tests/main/refresh:parallel_strict_fake
• openstack:opensuse-tumbleweed-64:tests/main/refresh:strict_fake
• openstack:opensuse-tumbleweed-64:tests/main/refresh:classic_fake
• openstack:opensuse-tumbleweed-64:tests/main/auto-refresh:parallel
• openstack:opensuse-tumbleweed-64:tests/main/snap-refresh-hold
• openstack:opensuse-tumbleweed-64:tests/main/refresh-app-awareness-notify
• google-arm:ubuntu-core-22-arm-64:tests/core/gadget-update-pc
• google-core:ubuntu-core-22-64:tests/core/mem-cgroup-disabled
• google:ubuntu-25.04-64:tests/main/lxd-mount-units

Restoring:

• openstack:debian-sid-64:tests/unit/
• openstack:debian-12-64:tests/unit/
• openstack:debian-12-64:tests/unit/
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64
• openstack:opensuse-tumbleweed-64:tests/main/refresh-app-awareness-notify
• openstack:opensuse-tumbleweed-64:tests/main/
• openstack:opensuse-tumbleweed-64
• google-arm:ubuntu-core-22-arm-64:tests/core/gadget-update-pc
• google-arm:ubuntu-core-22-arm-64:tests/core/
• google-arm:ubuntu-core-22-arm-64
• google-core:ubuntu-core-22-64:tests/core/mem-cgroup-disabled
• google-core:ubuntu-core-22-64:tests/core/
• google-core:ubuntu-core-22-64

[ZeyadYasser]

LGTM

[andrewphelpsj]

LGTM!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Report is 50 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #14994   +/-   ##
=========================================
  Coverage          ?   78.25%           
=========================================
  Files             ?     1159           
  Lines             ?   153934           
  Branches          ?        0           
=========================================
  Hits              ?   120455           
  Misses            ?    26066           
  Partials          ?     7413           

Flag	Coverage Δ
unittests	78.25% <100.00%> (?)

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