KYLIN-3877 Add flink specific config items for kylin properties configuration files

[yanghua]

JIRA ref : https://issues.apache.org/jira/browse/KYLIN-3877

[asfgit]

Can one of the admins verify this patch?

[asfgit]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (engine-flink@04394df). Click here to learn what that means.
The diff coverage is n/a.

@@               Coverage Diff               @@
##             engine-flink     #524   +/-   ##
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  Coverage                ?   24.23%           
  Complexity              ?     5028           
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  Files                   ?     1167           
  Lines                   ?    71042           
  Branches                ?    10088           
===============================================
  Hits                    ?    17218           
  Misses                  ?    52084           
  Partials                ?     1740

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[shaofengshi]

lgtm