fix #12233 redis cluster not support password bug.

[goto456]

What is the purpose of the change

fix the bug of not support redis cluster password

Brief changelog

init the value of password before use it, when redis model is cluster.

Verifying this change

Checklist

• Make sure there is a GitHub_issue field for the change (usually before you start working on it). Trivial changes like typos do not require a GitHub issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
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• Check if is necessary to patch to Dubbo 3 if you are work on Dubbo 2.7
• Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Add some description to dubbo-website project if you are requesting to add a feature.
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• If this contribution is large, please follow the Software Donation Guide.

[codecov-commenter]

Codecov Report

Merging #12240 (7da3ffa) into 3.2 (c5f8ce6) will increase coverage by 0.74%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                3.2   #12240      +/-   ##
============================================
+ Coverage     68.81%   69.55%   +0.74%     
+ Complexity      115        2     -113     
============================================
  Files          3559     1603    -1956     
  Lines        163607    65806   -97801     
  Branches      26766     9598   -17168     
============================================
- Hits         112581    45770   -66811     
+ Misses        41226    15640   -25586     
+ Partials       9800     4396    -5404     

see 1988 files with indirect coverage changes

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

40.0% Coverage
0.0% Duplication