[JDK 11] Fix error in mvn package -Pdocs (#2488)

Reviewed-by: Takanobu Asanuma <tasanuma@apache.org>

hadoop-common-project/hadoop-auth/pom.xml

@@ -257,7 +257,7 @@
               <execution>
                 <phase>package</phase>
                 <goals>
-                  <goal>javadoc</goal>
+                  <goal>javadoc-no-fork</goal>
                 </goals>
               </execution>
             </executions>

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

@@ -273,7 +273,7 @@
         <executions>
           <execution>
             <goals>
-              <goal>javadoc</goal>
+              <goal>javadoc-no-fork</goal>
             </goals>
             <phase>site</phase>
             <configuration>

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

@@ -206,7 +206,7 @@
             <executions>
               <execution>
                 <goals>
-                  <goal>javadoc</goal>
+                  <goal>javadoc-no-fork</goal>
                 </goals>
                 <phase>prepare-package</phase>
               </execution>

hadoop-project-dist/pom.xml

@@ -157,7 +157,7 @@
             <executions>
              <execution>
                 <goals>
-                  <goal>javadoc</goal>
+                  <goal>javadoc-no-fork</goal>
                 </goals>
                 <phase>prepare-package</phase>
               </execution>

hadoop-yarn-project/hadoop-yarn/pom.xml

@@ -128,7 +128,7 @@
             <executions>
               <execution>
                 <goals>
-                  <goal>javadoc</goal>
+                  <goal>javadoc-no-fork</goal>
                 </goals>
                 <phase>prepare-package</phase>
               </execution>