Add version for hadoop-mapreduce-client-core to the BOM (apache-spark-on-k8s#251)

The recent org.apache.orc:orc-mapreduce:1.4.0 addition introduced a conflict
that we must resolve in the BOM

Author: ash211

dists/hadoop-palantir/pom.xml

@@ -118,26 +118,31 @@
     <!--
       Propagate these from spark-parent hadoop-palantir profile
     -->
-    <dependency>
-      <groupId>org.apache.hadoop</groupId>
-      <artifactId>hadoop-azure</artifactId>
-      <version>${hadoop.version}</version>
-      <scope>${hadoop.deps.scope}</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>org.apache.hadoop</groupId>
-          <artifactId>hadoop-common</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>org.codehaus.jackson</groupId>
-          <artifactId>jackson-mapper-asl</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-core</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
+      <dependency>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-mapreduce-client-core</artifactId>
+        <version>${hadoop.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-azure</artifactId>
+        <version>${hadoop.version}</version>
+        <scope>${hadoop.deps.scope}</scope>
+        <exclusions>
+          <exclusion>
+            <groupId>org.apache.hadoop</groupId>
+            <artifactId>hadoop-common</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>org.codehaus.jackson</groupId>
+            <artifactId>jackson-mapper-asl</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+          </exclusion>
+        </exclusions>
+      </dependency>
     </dependencies>
   </dependencyManagement>
 
@@ -167,7 +172,7 @@
       <artifactId>spark-hadoop-cloud_${scala.binary.version}</artifactId>
     </dependency>
     <!--
-      Taken from cloud/pom.xml profile dpeendency
+      Taken from cloud/pom.xml profile dependency
     -->
     <dependency>
       <groupId>org.apache.hadoop</groupId>