HDFS-10570. Remove classpath conflicts of netty-all jar in hadoop-hdfs-client (Contributed by Vinayakumar B)

(cherry picked from commit c6fb9f0d0b63fdd735a6f455b6aee9d248852b41)

hadoop-hdfs-project/hadoop-hdfs-client/pom.xml

@@ -65,10 +65,41 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <artifactId>mockito-all</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-all</artifactId>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.mock-server</groupId>
       <artifactId>mockserver-netty</artifactId>
       <scope>test</scope>
+      <exclusions>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-buffer</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-codec</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-codec-http</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-common</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-handler</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-transport</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>org.apache.hadoop</groupId>