Add thousands separator to cardinality in plan diagram
Add thousands separator to cardinality in plan diagram

Tested manually by visually validating the cardinality numbers have
thousands separators.

Change-Id: I23bfbd8d235c7f1ab7a22d640e557d8ae9a00947
Reviewed-on: http://gerrit.cloudera.org:8080/5587
Tested-by: Impala Public Jenkins
Reviewed-by: Henry Robinson <3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com>

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