Enable org.gradle.warning.mode=fail

Author: trask

gradle.properties

@@ -6,8 +6,7 @@ org.gradle.priority=low
 # Gradle default is 256m which causes issues with our build - https://docs.gradle.org/current/userguide/build_environment.html#sec:configuring_jvm_memory
 org.gradle.jvmargs=-XX:MaxMetaspaceSize=512m
 
-# Currently causes failure when importing project in IntelliJ
-# org.gradle.warning.mode=fail
+org.gradle.warning.mode=fail
 
 # To allow caching more tasks in buildSrc project
 # This property is not mentioned in Gradle documentation