Gradle sometimes downloads tor-android-binary resources during build (or the build is failing)

I saw a failing builds in comment:42:ticket:27977 and later on complaining about missing tor-android-binary resources (*.pom and *.aar). Today I saw a build where Gradle is even downloading both files during build. I double-checked and they are available in gradle-dependecies-3 which we use during build, which is pretty concerning.

We should figure our what is going on here.