fix ut issue

[nobodyiam]

Motivation:

Try to fix the ci failed issue.

Modification:

Use spring profile to set the config value.

Result:

Fixes #490.

[codecov]

Codecov Report

Merging #492 (1744699) into master (cdbde41) will increase coverage by 0.62%.
The diff coverage is 76.08%.

@@             Coverage Diff              @@
##             master     #492      +/-   ##
============================================
+ Coverage     46.30%   46.93%   +0.62%     
- Complexity      219      224       +5     
============================================
  Files           331      332       +1     
  Lines          9916     9946      +30     
  Branches        943      950       +7     
============================================
+ Hits           4592     4668      +76     
+ Misses         4840     4794      -46     
  Partials        484      484              

Impacted Files	Coverage Δ
...ource/tracer/DataSourceClientStatJsonReporter.java	94.11% <0.00%> (ø)
...atasource/tracer/DataSourceClientStatReporter.java	0.00% <0.00%> (ø)
...java/com/alipay/common/tracer/core/SofaTracer.java	71.97% <0.00%> (ø)
...er/core/configuration/SofaTracerConfiguration.java	77.46% <ø> (ø)
.../tracer/core/reporter/digest/DiskReporterImpl.java	90.74% <ø> (+3.70%)	⬆️
...at/manager/SofaTracerStatisticReporterManager.java	75.47% <60.00%> (-2.08%)	⬇️
...com/alipay/common/tracer/core/utils/DateUtils.java	75.00% <75.00%> (ø)
...acer/plugins/datasource/utils/DataSourceUtils.java	68.36% <81.48%> (+4.57%)	⬆️
...racer/core/context/span/SofaTracerSpanContext.java	79.22% <100.00%> (ø)
.../tracer/core/registry/AbstractTextB3Formatter.java	59.15% <100.00%> (ø)
... and 14 more

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[nobodyiam]

@glmapper

It looks like this pr fixes the ci failed issue.
However, the code changes relate to the changes from #199 that you authored(original change1, original change2), would you please help to review?

[glmapper]

LGTM