Regression: HttpServer#getWebAppsPath used to be protected so subclasses could 
supply alternate webapps path but it was made private by HADOOP-6461
---------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: HADOOP-7351
                 URL: https://issues.apache.org/jira/browse/HADOOP-7351
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: stack


It USED to be protected rather than private but its access was changed by 
HADOOP-6461.  It did the following:

{code}
-  protected String getWebAppsPath() throws IOException {
-    URL url = getClass().getClassLoader().getResource("webapps");
+  private String getWebAppsPath(String appName) throws FileNotFoundException {
+    URL url = getClass().getClassLoader().getResource("webapps/" + appName);
...
{code}

HBase subclasses HttpServer providing its UI.  This change makes it so we can 
no longer do so.

This change made it into 0.21.  I'd like to get a fix committed to 0.22 as well 
as TRUNK.

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