Scb 2128 support dynamic single value enum

[wujimin]

Follow this checklist to help us incorporate your contribution quickly and easily:

• Make sure there is a JIRA issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a JIRA issue. Your pull request should address just this issue, without pulling in other changes.
• Each commit in the pull request should have a meaningful subject line and body.
• Format the pull request title like [SCB-XXX] Fixes bug in ApproximateQuantiles, where you replace SCB-XXX with the appropriate JIRA issue.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Run mvn clean install -Pit to make sure basic checks pass. A more thorough check will be performed on your pull request automatically.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

---

[codecov-io]

Codecov Report

Merging #2080 (2932e1a) into master (593a3a4) will decrease coverage by 0.02%.
The diff coverage is 81.81%.

@@             Coverage Diff              @@
##             master    #2080      +/-   ##
============================================
- Coverage     81.52%   81.49%   -0.03%     
- Complexity     1297     1308      +11     
============================================
  Files          1434     1441       +7     
  Lines         39219    39411     +192     
  Branches       3334     3353      +19     
============================================
+ Hits          31974    32119     +145     
- Misses         5790     5826      +36     
- Partials       1455     1466      +11     

Impacted Files	Coverage Δ	Complexity Δ
...l/schema/deserializer/scalar/EnumsReadSchemas.java	54.34% <0.00%> (-13.22%)	0.00 <0.00> (ø)
...nal/schema/serializer/scalar/EnumWriteSchemas.java	86.53% <0.00%> (-5.30%)	0.00 <0.00> (ø)
...ervicecomb/foundation/common/base/DynamicEnum.java	45.45% <45.45%> (ø)	0.00 <0.00> (?)
.../servicecomb/foundation/common/base/EnumUtils.java	57.14% <57.14%> (ø)	0.00 <0.00> (?)
...ecomb/foundation/common/base/DynamicEnumCache.java	66.66% <66.66%> (ø)	0.00 <0.00> (?)
...comb/swagger/extend/PropertyModelConverterExt.java	93.75% <93.75%> (ø)	0.00 <0.00> (?)
...apache/servicecomb/swagger/extend/SwaggerEnum.java	94.11% <94.11%> (ø)	0.00 <0.00> (?)
.../org/apache/servicecomb/it/junit/ITJUnitUtils.java	67.90% <100.00%> (+0.40%)	25.00 <1.00> (+1.00)
...servicecomb/it/testcase/TestDataTypePrimitive.java	100.00% <100.00%> (ø)	160.00 <8.00> (+8.00)
...a/org/apache/servicecomb/swagger/SwaggerUtils.java	93.47% <100.00%> (+0.10%)	0.00 <0.00> (ø)
... and 22 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 593a3a4...2932e1a. Read the comment docs.