revert zookeeper dependency

pom.xml

@@ -191,6 +191,22 @@ flexible messaging model and an intuitive client API.</description>
         <version>1.7</version>
       </dependency>
 
+      <dependency>
+        <groupId>org.apache.zookeeper</groupId>
+        <artifactId>zookeeper</artifactId>
+        <version>${zookeeper.version}</version>
+        <exclusions>
+          <exclusion>
+            <artifactId>slf4j-log4j12</artifactId>
+            <groupId>org.slf4j</groupId>
+          </exclusion>
+          <exclusion>
+            <artifactId>log4j</artifactId>
+            <groupId>log4j</groupId>
+          </exclusion>
+        </exclusions>
+      </dependency>
+
       <dependency>
         <groupId>org.apache.zookeeper</groupId>
         <artifactId>zookeeper</artifactId>