Refactor Trace for performance concern

[Jackie-Jiang]

Add API traceEnabled() into TraceContext
When trace is not enabled, do not log time in BaseOperator
Remove redundant thread local objects

[codecov-io]

Codecov Report

Merging #2057 into master will decrease coverage by 0.04%.
The diff coverage is 52.43%.

@@            Coverage Diff             @@
##           master    #2057      +/-   ##
==========================================
- Coverage   69.51%   69.47%   -0.05%     
==========================================
  Files         830      828       -2     
  Lines       40097    39994     -103     
  Branches     5411     5398      -13     
==========================================
- Hits        27874    27786      -88     
+ Misses      10350    10334      -16     
- Partials     1873     1874       +1

Impacted Files	Coverage Δ
...com/linkedin/pinot/core/operator/BaseOperator.java	19.04% <11.11%> (-74.29%)	⬇️
.../linkedin/pinot/core/util/trace/TraceCallable.java	62.5% <40%> (-10.23%)	⬇️
...core/query/executor/ServerQueryExecutorV1Impl.java	80.86% <40%> (+0.52%)	⬆️
...m/linkedin/pinot/core/util/trace/TraceContext.java	71.69% <70.45%> (-6.33%)	⬇️
.../linkedin/pinot/core/util/trace/TraceRunnable.java	88.88% <80%> (-2.78%)	⬇️
...inkedin/pinot/common/utils/NamedThreadFactory.java	50% <0%> (-33.34%)	⬇️
...ore/query/scheduler/resources/ResourceManager.java	81.81% <0%> (-13.64%)	⬇️
...pinot/core/operator/docidsets/OrBlockDocIdSet.java	84.9% <0%> (-13.21%)	⬇️
...re/operator/filter/MatchEntireSegmentOperator.java	75% <0%> (-12.5%)	⬇️
...in/pinot/core/query/reduce/NotEqualComparison.java	55.55% <0%> (-11.12%)	⬇️
... and 46 more

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[mcvsubbu]

Need to quote it to get the right json, otherwise we cannot parse it using standard json parsers.

[mcvsubbu]

please fix and then push. not worth changing it to json object at this time,