IMPALA-8202: Add more logging to TestAdmissionControllerStress
IMPALA-8202: Add more logging to TestAdmissionControllerStress

This change adds some logging and fixes a bug where the string
match that identified a timeout was wrong. The added logging
would provide more information about the state to help diagnose
root cause for IMPALA-8202.

Change-Id: Ib62cefac0dc53da0a9f26fdd959975deafc70c8f
Reviewed-on: http://gerrit.cloudera.org:8080/12829
Reviewed-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>
Tested-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>
Reviewed-on: https://gerrit.sjc.cloudera.com/c/cdh/impala/+/49282
Tested-by: Jenkins User <d95b56ce41a2e1ac4cecdd398defd7414407cc08@cloudera.com>
Reviewed-by: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>
Tested-by: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>
CDH-Build: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>
Quasar-L0: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>

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