Etcd register center

[freedom-xiao007]

// Describe your PR here; eg. Fixes #1147

Make sure that:

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed mvn clean install -Dmaven.javadoc.skip=true.

[yu199195]

use ${project.version}

[yu199195]

use ${project.version}

[codecov-io]

Codecov Report

Merging #1161 (e89696c) into master (cee1d70) will decrease coverage by 0.20%.
The diff coverage is 40.00%.

@@             Coverage Diff              @@
##             master    #1161      +/-   ##
============================================
- Coverage     73.39%   73.19%   -0.21%     
- Complexity     2116     2121       +5     
============================================
  Files           365      365              
  Lines          8040     8047       +7     
  Branches        875      876       +1     
============================================
- Hits           5901     5890      -11     
- Misses         1701     1721      +20     
+ Partials        438      436       -2     

Impacted Files	Coverage Δ	Complexity Δ
...g/dromara/soul/plugin/base/AbstractSoulPlugin.java	69.04% <0.00%> (ø)	16.00 <1.00> (ø)
...soul/client/tars/TarsServiceBeanPostProcessor.java	33.33% <37.50%> (-51.81%)	8.00 <0.00> (-6.00)
...java/org/dromara/soul/admin/entity/SelectorDO.java	94.44% <100.00%> (ø)	4.00 <0.00> (ø)
.../soul/plugin/httpclient/NettyHttpClientPlugin.java	57.14% <0.00%> (-2.05%)	10.00% <0.00%> (ø%)
...omara/soul/sync/data/http/HttpSyncDataService.java	72.54% <0.00%> (+3.92%)	12.00% <0.00%> (ø%)
.../soul/admin/service/impl/UpstreamCheckService.java	64.48% <0.00%> (+8.41%)	16.00% <0.00%> (+1.00%)
...iter/algorithm/ConcurrentRateLimiterAlgorithm.java	100.00% <0.00%> (+100.00%)	3.00% <0.00%> (+3.00%)
...ter/algorithm/LeakyBucketRateLimiterAlgorithm.java	100.00% <0.00%> (+100.00%)	3.00% <0.00%> (+3.00%)
...r/algorithm/SlidingWindowRateLimiterAlgorithm.java	100.00% <0.00%> (+100.00%)	4.00% <0.00%> (+4.00%)

---

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 cee1d70...e89696c. Read the comment docs.