fix integration test

[walterddr]

Looks like @AfterTest was not added to GRPC integration tests.

related to #8767 #8684

[codecov-commenter]

Codecov Report

Merging #8915 (7331965) into master (7024a6d) will decrease coverage by 6.70%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #8915      +/-   ##
============================================
- Coverage     69.72%   63.02%   -6.71%     
+ Complexity     4856     4837      -19     
============================================
  Files          1809     1762      -47     
  Lines         94331    92270    -2061     
  Branches      14069    13837     -232     
============================================
- Hits          65777    58152    -7625     
- Misses        23974    29929    +5955     
+ Partials       4580     4189     -391     

Flag	Coverage Δ
integration1	?
integration2	?
unittests1	66.39% <ø> (ø)
unittests2	14.87% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...va/org/apache/pinot/core/routing/RoutingTable.java	0.00% <0.00%> (-100.00%)	⬇️
...va/org/apache/pinot/common/config/NettyConfig.java	0.00% <0.00%> (-100.00%)	⬇️
...a/org/apache/pinot/common/metrics/MinionMeter.java	0.00% <0.00%> (-100.00%)	⬇️
...g/apache/pinot/common/metrics/ControllerMeter.java	0.00% <0.00%> (-100.00%)	⬇️
.../apache/pinot/common/metrics/BrokerQueryPhase.java	0.00% <0.00%> (-100.00%)	⬇️
.../apache/pinot/common/metrics/MinionQueryPhase.java	0.00% <0.00%> (-100.00%)	⬇️
...apache/pinot/common/helix/ExtraInstanceConfig.java	0.00% <0.00%> (-100.00%)	⬇️
...ache/pinot/server/access/AccessControlFactory.java	0.00% <0.00%> (-100.00%)	⬇️
...he/pinot/common/messages/SegmentReloadMessage.java	0.00% <0.00%> (-100.00%)	⬇️
...he/pinot/common/messages/TableDeletionMessage.java	0.00% <0.00%> (-100.00%)	⬇️
... and 406 more

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