IMPALA-5809: Relax max_minidumps in breakpad test
IMPALA-5809: Relax max_minidumps in breakpad test

The change to address IMPALA-5769 added periodic cleaning for minidumps,
which got in the way of the other minidump tests.

This change sets max_minidumps to the default value (9) for all tests to
keep the cleanup thread from interfering, and then sets a smaller limit
where needed.

Change-Id: I977930ae87b8d4671a89c1e07ba76b12eb92fa55
Reviewed-on: http://gerrit.cloudera.org:8080/7716
Reviewed-by: Tim Armstrong <2f8e34250f03a653da3dc27f7ec203eafdde80fc@cloudera.com>
Tested-by: Impala Public Jenkins

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