Moved a number of tests with tuned mem_limits. In some cases
this required separating the tests from non-tuned functional
tests.
TestQueryMemLimit used very high and very low limits only, so seemed
safe to run in all configurations.
Change-Id: I9686195a29dde2d87b19ef8bb0e93e08f8bee662
Reviewed-on: http://gerrit.cloudera.org:8080/10370
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>