ci: fix sitespeed workflow MAASENG-2671

[petermakowski]

Done

• ci: fix sitespeed workflow MAASENG-2671

sitespeed.yml

• Replaced the manual MAAS installation and database setup steps with the canonical/setup-maas action
• Added steps to log in the MAAS admin user and wait for MAAS boot resources to finish importing.
• Removed the manual database dump download and restoration steps, as the setup-maas action handles this automatically.

login.js

• Updated the initial navigation URL from /network-discovery to /.

machines.js

• Updated the selector used to check for the presence of 1000 machines in the machine list to [data-testid="main-toolbar-heading"]

db-dumps

On top of this, maas-ui-testing db-dumps have been updated from maas-sampledata-dumper.

QA steps

• Verify that the sitespeed action for a commit prior to disabling it for non-release branches was successful - https://github.com/canonical/maas-ui/actions/runs/8266888660

Fixes

Fixes: MAASENG-2671

Screenshots

Notes

[webteam-app]

Demo starting at https://maas-ui-5346.demos.haus