Fix run-integ-test script to filter out non-java file changes

[zoewangg]

Description

Fix run-integ-test script to filter out non-java file changes

License

• I confirm that this pull request can be released under the Apache 2 license

[codecov-io]

Codecov Report

Merging #1058 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1058      +/-   ##
============================================
+ Coverage     56.04%   56.05%   +0.01%     
- Complexity     4651     4652       +1     
============================================
  Files           818      818              
  Lines         27915    27915              
  Branches       2253     2253              
============================================
+ Hits          15646    15649       +3     
+ Misses        11542    11540       -2     
+ Partials        727      726       -1

Impacted Files	Coverage Δ	Complexity Δ
...nio/netty/internal/OldConnectionReaperHandler.java	90.9% <0%> (+9.09%)	15% <0%> (+1%)	⬆️

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