Remove parameters from registryUrl to prevent config pollution

[AlbumenJ]

What is the purpose of the change

Fix #7188

[kylixs]

I think it's best to fix it based on 2.7.9-release for easy verification.

[chickenlj]

We will release it in the next version.

[kylixs]

We will release it in the next version.

This bug may affect users who set the group attribute of the registry. If there is no problem with the modified code, can it be merged into 2.7.9?

[chickenlj]

I think there's no rush with this bugfix. I believe this is a regression of 2.7.8 or a few versions before. Considering that registry group feature is mostly used by some advanced users who most likely would stay in a stable version, there won't have many users facing this issue.

A new round of apache vote would take days to weeks, I think it's better to put it in the next release

[codecov-io]

Codecov Report

Merging #7189 (e4a1524) into master (f7c6396) will decrease coverage by 0.02%.
The diff coverage is 50.00%.

@@             Coverage Diff              @@
##             master    #7189      +/-   ##
============================================
- Coverage     59.98%   59.96%   -0.03%     
+ Complexity      289      288       -1     
============================================
  Files          1004     1004              
  Lines         40016    40020       +4     
  Branches       5933     5937       +4     
============================================
- Hits          24005    23998       -7     
- Misses        13314    13318       +4     
- Partials       2697     2704       +7     

Impacted Files	Coverage Δ	Complexity Δ
...e/dubbo/rpc/cluster/directory/StaticDirectory.java	65.00% <0.00%> (ø)	0.00 <0.00> (ø)
...java/org/apache/dubbo/common/utils/ArrayUtils.java	18.18% <0.00%> (+1.51%)	0.00 <0.00> (ø)
...etadata/store/failover/StrategyMetadataReport.java	50.00% <0.00%> (ø)	0.00 <0.00> (ø)
...emoting/transport/grizzly/GrizzlyCodecAdapter.java	13.20% <0.00%> (+0.24%)	1.00 <0.00> (ø)
...apache/dubbo/rpc/protocol/redis/RedisProtocol.java	60.97% <0.00%> (ø)	7.00 <0.00> (ø)
...dubbo/rpc/cluster/directory/AbstractDirectory.java	70.27% <77.77%> (-1.61%)	0.00 <0.00> (ø)
...e/dubbo/registry/integration/DynamicDirectory.java	59.00% <100.00%> (ø)	0.00 <0.00> (ø)
...ache/dubbo/registry/multiple/MultipleRegistry.java	60.64% <100.00%> (+1.29%)	0.00 <0.00> (ø)
...bo/config/event/listener/LoggingEventListener.java	37.50% <0.00%> (-25.00%)	0.00% <0.00%> (ø%)
...mmon/threadpool/support/AbortPolicyWithReport.java	86.53% <0.00%> (-10.97%)	0.00% <0.00%> (ø%)
... and 27 more

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