[tracegen] Add options to generate more spans and attributes #4535
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Short description of the changes
Add new configuration options:
-services
: to generate traces on behalf of many services, by instantiating different tracers-spans
: to generate more than one child span-attrs
: to generate N number of attributes on each child span-attr-values
: to control how many distinct values each attribute can haveFix weird span durations when using
-pause 0s
.Test: