HADOOP-18942. Upgrade ZooKeeper to 3.7.2. (#6200)

Signed-off-by: Masatake Iwasaki <iwasakims@apache.org>
(cherry picked from commit 8bf72346a59c2eb785fb2a8e55c0246a4f158646)

 Conflicts:
	hadoop-project/pom.xml

hadoop-project/pom.xml

@@ -105,7 +105,7 @@
     <hadoop-thirdparty-shaded-protobuf-prefix>${hadoop-thirdparty-shaded-prefix}.protobuf</hadoop-thirdparty-shaded-protobuf-prefix>
     <hadoop-thirdparty-shaded-guava-prefix>${hadoop-thirdparty-shaded-prefix}.com.google.common</hadoop-thirdparty-shaded-guava-prefix>
 
-    <zookeeper.version>3.6.4</zookeeper.version>
+    <zookeeper.version>3.7.2</zookeeper.version>
     <curator.version>5.2.0</curator.version>
     <findbugs.version>3.0.5</findbugs.version>
     <dnsjava.version>2.1.7</dnsjava.version>
@@ -1423,6 +1423,10 @@
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-reload4j</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-client</artifactId>
+          </exclusion>
         </exclusions>
       </dependency>
       <dependency>
@@ -1459,6 +1463,10 @@
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-log4j12</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-client</artifactId>
+          </exclusion>
         </exclusions>
       </dependency>
       <dependency>