[master] KUDU-2671: Range specific hashing during table alter op.

This commit has the changes needed on the master side to
support this functionality. A basic test is added to test
the functionality as well.

Change-Id: Iea9e3317d172c9ae76662c44b21fca9a4819930a
Reviewed-on: http://gerrit.cloudera.org:8080/18515
Tested-by: Alexey Serbin <alexey@apache.org>
Reviewed-by: Alexey Serbin <alexey@apache.org>
2 files changed