Review Request 48400: Extract task collection logic to helper function.

[Jay Guo]

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https://reviews.apache.org/r/48400/
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Review request for mesos, Anand Mazumdar and Vinod Kone.


Bugs: MESOS-5493
    https://issues.apache.org/jira/browse/MESOS-5493


Repository: mesos


Description
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Add a helper function _tasks() to collect tasks. This is
to be used by both tasks() and getTasks() in operator API.


Diffs
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  src/master/http.cpp 4b2d1386e1ecb447b597a432f9df9adaa5c3aa37 
  src/master/master.hpp 790da3ce686401c378ad9c62d497d60893c4ce41 

Diff: https://reviews.apache.org/r/48400/diff/


Testing
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make check on ubuntu 14.04


Thanks,

Jay Guo