Review Request: Short term fix for fire-walling some potent messages from the incorrect master

[Vinod Kone]

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https://reviews.apache.org/r/7270/
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Review request for mesos, Benjamin Hindman and Ben Mahler.


Description
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See summary


This addresses bug MESOS-284.
    https://issues.apache.org/jira/browse/MESOS-284


Diffs
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  src/sched/sched.cpp 53e26d3f202f29eb864403ff35dd48891bb0b6be 
  src/slave/slave.cpp 49d8e761ca9a8af4a910aea736b5ee0288fd67b2 

Diff: https://reviews.apache.org/r/7270/diff/


Testing
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make check


Thanks,

Vinod Kone