IMPALA-7809: support Kudu 1.9 in test_concurrent_schema_change
IMPALA-7809: support Kudu 1.9 in test_concurrent_schema_change

This patch extends the match of allowable errors in
test_concurrent_schema_change to work with Kudu 1.9.

Testing: Local with a Kudu 1.9 minicluster environment.

Change-Id: I7fc24bb6a18aecc0cb726b8d66f0aeccf56bbb9b
Reviewed-on: http://gerrit.cloudera.org:8080/11882
Reviewed-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>
Tested-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>

cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala