IMPALA-1616: Improve the Memory Limit Exceeded error report
IMPALA-1616: Improve the Memory Limit Exceeded error report

The error report has been changed to include the id of the fragment
instance that exceeded the memory limit.

Change-Id: Ibb4e0c359d889938b4c351771ba539850bdb95ea
Reviewed-on: http://gerrit.cloudera.org:8080/4335
Reviewed-by: Michael Ho <43544f6c6f19372b140301f92a3768afc300868a@cloudera.com>
Tested-by: Internal Jenkins

cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala