use the official Pyrolite release

Author: mengxr

core/pom.xml

@@ -377,9 +377,15 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>org.spark-project</groupId>
+      <groupId>net.razorvine</groupId>
       <artifactId>pyrolite</artifactId>
       <version>4.4</version>
+      <exclusions>
+        <exclusion>
+          <groupId>net.razorvine</groupId>
+          <artifactId>serpent</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>net.sf.py4j</groupId>