bugfix: fix configuration center can't read configuration using SpringCloudConfig

[xingfudeshi]

Ⅰ. Describe what this PR did

Fix configuration center cannot read configuration using SpringCloudConfig

Ⅱ. Does this pull request fix one issue?

fixes #2104

Ⅲ. Why don't you add test cases (unit test/integration test)?

I've done integration testing and already added a UT.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #2172 into develop will increase coverage by 1.13%.
The diff coverage is 54.28%.

@@              Coverage Diff              @@
##             develop    #2172      +/-   ##
=============================================
+ Coverage       52.8%   53.93%   +1.13%     
- Complexity      2518     2620     +102     
=============================================
  Files            489      490       +1     
  Lines          15344    15342       -2     
  Branches        1750     1751       +1     
=============================================
+ Hits            8102     8275     +173     
+ Misses          6469     6285     -184     
- Partials         773      782       +9

Impacted Files	Coverage Δ	Complexity Δ
...ing/boot/autoconfigure/util/StringFormatUtils.java	30.76% <ø> (ø)	4 <0> (ø)	⬇️
...e/properties/registry/RegistryRedisProperties.java	80.95% <100%> (+28.32%)	9 <0> (+5)	⬆️
...ta/spring/boot/autoconfigure/StarterConstants.java	96.42% <100%> (-0.94%)	1 <0> (ø)
...gure/provider/SpringBootConfigurationProvider.java	35.71% <36.36%> (+0.32%)	9 <3> (ø)	⬇️
...ot/autoconfigure/properties/file/RmProperties.java	52.94% <52.94%> (ø)	5 <5> (?)
...ot/autoconfigure/properties/file/TmProperties.java	55.55% <55.55%> (ø)	3 <3> (?)
.../autoconfigure/properties/file/UndoProperties.java	53.84% <66.66%> (+53.84%)	4 <3> (+4)	⬆️
.../autoconfigure/properties/file/LockProperties.java	53.84% <66.66%> (+53.84%)	4 <3> (+4)	⬆️
...server/store/file/FileTransactionStoreManager.java	56.5% <0%> (-0.64%)	29% <0%> (-1%)
...o/seata/server/coordinator/DefaultCoordinator.java	54.35% <0%> (-0.52%)	28% <0%> (-1%)
... and 26 more

[zjinlei]

LGTM

[slievrly]

LGTM