ARUHA-1674 use gzip compression on post requests as well

[antban]

ARUHA-1674
As there are requests that are "GET with POST" we have to support gzip compression on post requests as well

[v-stepanov]

👍

[codecov-io]

Codecov Report

Merging #880 into master will decrease coverage by 0.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #880      +/-   ##
============================================
- Coverage     53.39%   53.38%   -0.02%     
+ Complexity     1695     1694       -1     
============================================
  Files           310      310              
  Lines          9403     9404       +1     
  Branches        845      845              
============================================
- Hits           5021     5020       -1     
- Misses         4082     4083       +1     
- Partials        300      301       +1

Impacted Files	Coverage Δ	Complexity Δ
...in/java/org/zalando/nakadi/config/JettyConfig.java	100% <100%> (ø)	3 <0> (ø)	⬇️
...n/java/org/zalando/nakadi/service/EventStream.java	73.38% <0%> (-1.62%)	29% <0%> (-1%)

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[antban]

👍

[antban]

deploy validation please

[adyach]

deploy validation please