feature: spring boot support for custom config and registry type

[JRial95]

Ⅰ. Describe what this PR did

Add the Spring Boot support for custom config and registry type

Ⅱ. Does this pull request fix one issue?

Fixes #3196.

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

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[funky-eyes]

are you currently sure you can use Custom Config and Registy?

[JRial95]

Yes, it works for the custom registry. Here is a minimal example.
However, I have not tested the custom config.

[JRial95]

I have updated my example. The custom config also works.

[funky-eyes]

thx. good job------------------&nbsp;原始邮件&nbsp;------------------ 发件人:&nbsp;&quot;Jonathan&amp;nbsp;Rial&quot;<notifications@github.com&gt; 发送时间:&nbsp;2020年10月15日(星期四) 晚上11:53 收件人:&nbsp;&quot;seata/seata&quot;<seata@noreply.github.com&gt;; 抄送:&nbsp;&quot;FUNKYE&quot;<364176773@qq.com&gt;;&quot;Comment&quot;<comment@noreply.github.com&gt;; 主题:&nbsp;Re: [seata/seata] feature: spring boot support for custom config and registry type (#3198)

[funky-eyes]

`registry {
type = "custom"

custom {
name = "MyCustomRegistry"
}
} `

This is possible as long as your dependency is seata-all

[funky-eyes]

LGTM

[wangliang181230]

Please add configuration information to the configuration file in /script/client

[codecov-io]

Codecov Report

Merging #3198 into develop will increase coverage by 0.00%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             develop    #3198   +/-   ##
==========================================
  Coverage      50.50%   50.51%           
- Complexity      3135     3139    +4     
==========================================
  Files            596      598    +2     
  Lines          19761    19773   +12     
  Branches        2465     2465           
==========================================
+ Hits            9980     9988    +8     
- Misses          8777     8781    +4     
  Partials        1004     1004           

Impacted Files	Coverage Δ	Complexity Δ
...gure/properties/config/ConfigCustomProperties.java	60.00% <60.00%> (ø)	2.00 <2.00> (?)
.../properties/registry/RegistryCustomProperties.java	60.00% <60.00%> (ø)	2.00 <2.00> (?)
...ta/spring/boot/autoconfigure/StarterConstants.java	100.00% <100.00%> (ø)	1.00 <0.00> (ø)

[JRial95]

@wangliang181230 Configuration information added to the configuration file in /script/client

[wangliang181230]

LGTM