Return more detailed errors from ES storage

[yurishkuro]

Which problem is this PR solving?

• In many cases when ES operations fail, the only error returned to the UI or written to Jaeger log is all shards fail, which is pretty useless for the actual troubleshooting.
• Meanwhile, the driver actually returns an error struct that contains a RootCause field.

Description of the changes

• Inspect the error and include root cause if present

How was this change tested?

Run all-in-one and curl 'http://localhost:16686/api/services'

Before:
$ curl 'http://localhost:16686/api/services'
{"data":null,"total":0,"limit":0,"offset":0,"errors":[{"code":500,"msg":"search services failed: elastic: Error 400 (Bad Request): all shards failed [type=search_phase_execution_exception]"}]}

After:
$ curl 'http://localhost:16686/api/services'
{"data":null,"total":0,"limit":0,"offset":0,"errors":[{"code":500,"msg":"search services failed: elastic: Error 400 (Bad Request): all shards failed [type=search_phase_execution_exception]: RootCause[Fielddata is disabled on [serviceName] in [jaeger-service-]. Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [serviceName] in order to load field data by uninverting the inverted index. Note that this can use significant memory. [type=illegal_argument_exception]]"}]}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5375e1e) 94.44% compared to head (864eb70) 94.43%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5209      +/-   ##
==========================================
- Coverage   94.44%   94.43%   -0.02%     
==========================================
  Files         332      333       +1     
  Lines       19189    19201      +12     
==========================================
+ Hits        18124    18133       +9     
- Misses        878      880       +2     
- Partials      187      188       +1     

Flag	Coverage Δ
cassandra-3.x	25.53% <0.00%> (-0.05%)	⬇️
cassandra-4.x	25.53% <0.00%> (-0.05%)	⬇️
elasticsearch-5.x	19.83% <0.00%> (-0.04%)	⬇️
elasticsearch-6.x	19.83% <0.00%> (-0.04%)	⬇️
elasticsearch-7.x	19.94% <0.00%> (-0.06%)	⬇️
elasticsearch-8.x	20.03% <0.00%> (-0.06%)	⬇️
grpc-badger	19.46% <0.00%> (-0.03%)	⬇️
kafka	14.06% <0.00%> (-0.03%)	⬇️
opensearch-1.x	19.96% <0.00%> (-0.04%)	⬇️
opensearch-2.x	19.94% <0.00%> (-0.04%)	⬇️
unittests	92.28% <100.00%> (-0.02%)	⬇️

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[jkowall]

LGTM!