Add text of Apache license
Add text of Apache license

Change-Id: Ie5c6e26e2acae543cf8b17f17e18b09b7a07adf4
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2484
Reviewed-by: Nong Li <99a5e5f8f5911755b88e0b536d46aafa102bed41@cloudera.com>
Tested-by: Henry Robinson <3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com>
(cherry picked from commit 96eb8365515975d72067dcfbc9f4d0e3cc577f37)
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2490
Reviewed-by: Henry Robinson <3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com>

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