Review Request 21176: Added a test to ensure a recovered slave that does not re-register is removed.

[Ben Mahler]

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Review request for mesos, Benjamin Hindman and Vinod Kone.


Bugs: MESOS-1319 and MESOS-1322
    https://issues.apache.org/jira/browse/MESOS-1319
    https://issues.apache.org/jira/browse/MESOS-1322


Repository: mesos-git


Description
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This tests that:

(1) Frameworks are notified of slaves that are lost across failovers.
(2) Slaves that are removed cannot re-register after a failover.


Diffs
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  src/master/master.cpp c79fdafde6b08d74e6fea71afa79aded41b3a9ab 
  src/tests/master_tests.cpp 939a08d0ed25293d103728864c2b5e79f04a1b42 

Diff: https://reviews.apache.org/r/21176/diff/


Testing
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./bin/mesos-tests.sh 
--gtest_filter="MasterTest.RecoveredSlaveDoesNotReregister" --gtest_repeat=150 
--gtest_break_onailure --verbose


Thanks,

Ben Mahler