Disable debug build for apk size measurements. (#1800)
Disable debug build for apk size measurements. (#1800)

Android Gradle Plugin does not guarantee that debug build produces
reproducible artifacts. This will make sure the size measurements
are stable.
firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk