Increase periodic test JVM heap size and enable Gradle daemon
Increase periodic test JVM heap size and enable Gradle daemon

Maybe this will get the periodic tests building again.

Bug: T152976
Change-Id: Iaf0f435cc142c022251f0347f455261ab8910983

dbrant/apps-android-wikipedia,wikimedia/apps-android-wikipedia,dbrant/apps-android-wikipedia,dbrant/apps-android-wikipedia,wikimedia/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,dbrant/apps-android-wikipedia,wikimedia/apps-android-wikipedia,dbrant/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,wikimedia/apps-android-wikipedia