Fix index creation during random data loading
Fix index creation during random data loading

A previous commit removed index name from the CREATE INDEX statement.
It turns out it is mandatory to include the index name for older
versions of Postgres.

Change-Id: Ic2959134780f8ed564597defd98798af44ad4fca
Reviewed-on: http://gerrit.cloudera.org:8080/2025
Reviewed-by: Taras Bobrovytsky <72e4a6fc4c5ef23f318dc209e8402725249a5676@cloudera.com>
Tested-by: Internal Jenkins

kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala