Flaky HTTP unit test

:app:testDebugUnitTest

org.fdroid.fdroid.net.HttpDownloaderTest > downloadUninterruptedTestWithProgress FAILED
    java.lang.AssertionError at HttpDownloaderTest.java:59

8 tests completed, 1 failed
:app:testDebugUnitTest FAILED

Ping @eighthave since I'm pretty sure this started when you moved these tests from the emulator to the local JVM.

A couple of recent examples:

• https://gitlab.com/fdroid/fdroidclient/builds/1244298
• https://gitlab.com/fdroid/fdroidclient/builds/1258115

This is pretty serious as it bites us in most of the MRs.