java client's long polling timeout is 90 seconds, so server side long polling timeout must be less than 90

[nobodyiam]

#2532

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@bce744d). Click here to learn what that means.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             master    #2630   +/-   ##
=========================================
  Coverage          ?   50.07%           
  Complexity        ?     2047           
=========================================
  Files             ?      412           
  Lines             ?    12594           
  Branches          ?     1292           
=========================================
  Hits              ?     6306           
  Misses            ?     5841           
  Partials          ?      447

Impacted Files	Coverage Δ	Complexity Δ
...m/ctrip/framework/apollo/biz/config/BizConfig.java	31.25% <0%> (ø)	8 <0> (?)

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[JaredTan95]

LGTM