[#noissue] remove whitespace in metric groupName

[donghun-cho]

change metric groupName

• remove whitespace in metric groupName

[codecov]

Codecov Report

Merging #9287 (964ca89) into master (1fbafb1) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #9287      +/-   ##
============================================
- Coverage     39.60%   39.57%   -0.03%     
+ Complexity    11842    11829      -13     
============================================
  Files          3409     3409              
  Lines         91577    91579       +2     
  Branches      10162    10162              
============================================
- Hits          36269    36244      -25     
- Misses        52207    52232      +25     
- Partials       3101     3103       +2     

Impacted Files	Coverage Δ
...etric/web/service/SystemMetricDataServiceImpl.java	0.00% <0.00%> (ø)
...inpoint/profiler/logging/Log4j2ContextFactory.java	0.00% <0.00%> (-100.00%)	⬇️
...rofiler/logging/EmptyShutdownCallbackRegistry.java	0.00% <0.00%> (-100.00%)	⬇️
...p/pinpoint/rpc/client/WriteFailFutureListener.java	56.25% <0.00%> (-25.00%)	⬇️
...rp/pinpoint/rpc/packet/ControlHandshakePacket.java	44.82% <0.00%> (-24.14%)	⬇️
...vercorp/pinpoint/rpc/packet/ServerClosePacket.java	47.82% <0.00%> (-17.40%)	⬇️
.../navercorp/pinpoint/rpc/client/RequestManager.java	66.66% <0.00%> (-7.58%)	⬇️
...vercorp/pinpoint/rpc/packet/ClientClosePacket.java	46.66% <0.00%> (-6.67%)	⬇️
...rp/pinpoint/rpc/server/PinpointServerAcceptor.java	84.10% <0.00%> (-4.64%)	⬇️
...java/com/navercorp/pinpoint/rpc/DefaultFuture.java	74.31% <0.00%> (-1.84%)	⬇️
... and 5 more

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