feat(modbus-tcp):support backup ip

[hxy7yx]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.10345% with 4 lines in your changes missing coverage. Please review.

Project coverage is 75.16%. Comparing base (141b3f5) to head (adaad8d).
Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
plugins/modbus/modbus_tcp.c	91.30%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2314      +/-   ##
==========================================
- Coverage   75.38%   75.16%   -0.22%     
==========================================
  Files         112      113       +1     
  Lines       22604    22818     +214     
==========================================
+ Hits        17039    17151     +112     
- Misses       5565     5667     +102     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests