Added Label Validation in SPM Integration Test

[akstron]

Which problem is this PR solving?

• Part of Create integration tests for SPM #5608

Description of the changes

• The changes include requesting metric with groupByOperation to get labels along with operation. This is then compared with the expected label set = "operation service_name"

How was this change tested?

• jaeger/scripts/spm-integration-test.sh

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: yarn lint and yarn test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.47%. Comparing base (b644701) to head (fa435e5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6142   +/-   ##
=======================================
  Coverage   96.47%   96.47%           
=======================================
  Files         354      354           
  Lines       20107    20107           
=======================================
  Hits        19398    19398           
  Misses        524      524           
  Partials      185      185           

Flag	Coverage Δ
badger_v1	8.32% <ø> (ø)
badger_v2	1.68% <ø> (?)
cassandra-4.x-v1	14.40% <ø> (ø)
cassandra-4.x-v2	1.62% <ø> (ø)
cassandra-5.x-v1	14.40% <ø> (ø)
cassandra-5.x-v2	1.62% <ø> (ø)
elasticsearch-6.x-v1	18.53% <ø> (ø)
elasticsearch-7.x-v1	18.60% <ø> (ø)
elasticsearch-8.x-v1	18.78% <ø> (+<0.01%)	⬆️
elasticsearch-8.x-v2	1.67% <ø> (ø)
grpc_v1	9.50% <ø> (+<0.01%)	⬆️
grpc_v2	7.01% <ø> (ø)
kafka-v1	8.89% <ø> (ø)
kafka-v2	1.68% <ø> (ø)
memory_v2	1.67% <ø> (?)
opensearch-1.x-v1	18.65% <ø> (ø)
opensearch-2.x-v1	18.65% <ø> (-0.01%)	⬇️
opensearch-2.x-v2	1.67% <ø> (-0.02%)	⬇️
tailsampling-processor	0.47% <ø> (?)
unittests	95.38% <ø> (ø)

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