add Kerberos HTTP SPNEGO authentication support to Hadoop JT/NN/DN/TT 
web-consoles
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                 Key: HADOOP-7119
                 URL: https://issues.apache.org/jira/browse/HADOOP-7119
             Project: Hadoop Common
          Issue Type: New Feature
          Components: security
         Environment: all
            Reporter: Alejandro Abdelnur
            Assignee: Alejandro Abdelnur


Currently the JT/NN/DN/TT web-consoles don't support any form of authentication.

Hadoop RPC API already supports Kerberos authentication.

Kerberos enables single sign-on.

Popular browsers (Firefox and Internet Explorer) have support for Kerberos HTTP 
SPNEGO.

Adding support for Kerberos HTTP SPNEGO to Hadoop web consoles would provide a 
unified authentication mechanism and single sign-on for Hadoop web UI and 
Hadoop RPC.

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