[ASTERIXDB-1564][CONF] Replace Remaining Usage of JUL

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
- Replace remaining usage of java.util.logging
  by Log4j2.

Change-Id: I894348b09a862693ae31de7c2f4768877a5297db
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2254
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Michael Blow <mblow@apache.org>
diff --git a/hyracks-fullstack/hyracks/hyracks-util/pom.xml b/hyracks-fullstack/hyracks/hyracks-util/pom.xml
index 52ccf2f..c521f08 100644
--- a/hyracks-fullstack/hyracks/hyracks-util/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-util/pom.xml
@@ -75,6 +75,10 @@
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-api</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-core</artifactId>
+    </dependency>
   </dependencies>
 
 </project>