Hyracks Unit tests for LSM Filters

Basic tests for filter behaviors in LSMBTrees.
Simply uses the PK as the filtering attribute for now.

Change-Id: Ie0e79c0a25d5d6be727b9ebad841801024c00e94
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1704
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
BAD: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Jianfeng Jia <jianfeng.jia@gmail.com>
Reviewed-by: Taewoo Kim <wangsaeu@gmail.com>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
index 77eac3a..63f5594 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
@@ -98,5 +98,10 @@
       <artifactId>hyracks-storage-am-btree</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-lang3</artifactId>
+      <version>3.5</version>
+    </dependency>
   </dependencies>
 </project>