Test Lab section has errors (error: package android.support.test.rule does not exist)

[alisatter]

Looks like the instructions for Test Lab should include the following in app/build.gradle

androidTestImplementation 'com.android.support.test:rules:1.0.2'

Otherwise, developers are faced with the following errors when running build in Firebase Test Lab:

error: package android.support.test.rule does not exist error: cannot find symbol class ActivityTestRule

[samtstern]

Thanks @alisatter I think that's correct.