Revert "HADOOP-16579. Upgrade to Apache Curator 4.2.0 excluding ZK (#1531). Contributed by Norbert Kalmár."

This reverts commit 10bdc592d6157519166c262addecbff23b4232de.

hadoop-project/pom.xml

@@ -88,7 +88,7 @@
     <protoc.path>${env.HADOOP_PROTOC_PATH}</protoc.path>
 
     <zookeeper.version>3.4.13</zookeeper.version>
-    <curator.version>4.2.0</curator.version>
+    <curator.version>2.13.0</curator.version>
     <findbugs.version>3.0.0</findbugs.version>
     <spotbugs.version>3.1.0-RC1</spotbugs.version>
     <dnsjava.version>2.1.7</dnsjava.version>
@@ -1340,20 +1340,6 @@
        <groupId>org.apache.curator</groupId>
        <artifactId>curator-client</artifactId>
        <version>${curator.version}</version>
-       <exclusions>
-         <exclusion>
-           <groupId>org.apache.zookeeper</groupId>
-           <artifactId>zookeeper</artifactId>
-         </exclusion>
-         <exclusion>
-           <groupId>com.google.guava</groupId>
-           <artifactId>guava</artifactId>
-         </exclusion>
-         <exclusion>
-           <groupId>org.slf4j</groupId>
-           <artifactId>slf4j-api</artifactId>
-         </exclusion>
-       </exclusions>
      </dependency>
      <dependency>
        <groupId>org.apache.curator</groupId>
@@ -1364,16 +1350,6 @@
        <groupId>org.apache.curator</groupId>
        <artifactId>curator-test</artifactId>
        <version>${curator.version}</version>
-       <exclusions>
-         <exclusion>
-           <groupId>org.apache.zookeeper</groupId>
-           <artifactId>zookeeper</artifactId>
-         </exclusion>
-         <exclusion>
-           <groupId>com.google.guava</groupId>
-           <artifactId>guava</artifactId>
-         </exclusion>
-       </exclusions>
      </dependency>
      <dependency>
        <groupId>org.bouncycastle</groupId>