Review Request: FLUME-1154: flume-ng script should first try finding java from PATH and then try using bigtop, instead of vice-versa

[Leslin (Hong Xiang Lin)]

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https://reviews.apache.org/r/5466/
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Review request for Flume.


Description
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Change flume-ng script to find java from PATH first instead of using 
bigtop-detect-javahome to get when JAVA_HOME does not set. It will helpful in 
multi-java environment. 


This addresses bug FLUME-1154.
    https://issues.apache.org/jira/browse/FLUME-1154


Diffs
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  bin/flume-ng 24a7d95 

Diff: https://reviews.apache.org/r/5466/diff/


Testing
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test with normal start agent


Thanks,

Leslin  (Hong Xiang Lin)