fix code scaning alerts —— Incomplete regular expression for hostnames

[xliuqq]

Ⅰ. Describe what this PR does

fix code scaning https://github.com/fluid-cloudnative/fluid/security/code-scanning/945

Ⅱ. Does this pull request fix one issue?

fixes #XXXX

Ⅲ. List the added test cases (unit test/integration test) if any, please explain if no tests are needed.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
2.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.33%. Comparing base (6d0ba26) to head (b81ac42).
Report is 53 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4052   +/-   ##
=======================================
  Coverage   64.33%   64.33%           
=======================================
  Files         477      477           
  Lines       28444    28444           
=======================================
  Hits        18300    18300           
  Misses       7968     7968           
  Partials     2176     2176           

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[cheyang]

/lgtm
/approve

[fluid-e2e-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cheyang

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