svn commit: r20059 - in /release/incubator/impala: 2.7.0/ 2.8.0/

[tarasbob]

Author: tarasbob
Date: Sat Jun 17 01:00:34 2017
New Revision: 20059

Log:
Re-add 2.7.0 and 2.8.0 releases to fix broken links

Added:
    release/incubator/impala/2.7.0/
      - copied from r20042, release/incubator/impala/2.7.0/
    release/incubator/impala/2.8.0/
      - copied from r20042, release/incubator/impala/2.8.0/