Synaptic tests frequently fail

I’m working on resolving this by changing the hardcoded sleeps into @screen.waits. The result of this work makes this feature much more reliable during my test runs.

The current remaining frequent failure (“Tor is ready”) will be fixed once anonym’s fix for #8714 (closed) is merged.

Feature Branch: kytv:bugfix/8742-synaptic-test-robustness

Parent Task: #5330 (closed)

Original created by @kytv on 8742 (Redmine)