l3_interfaces - Fix replaced state handling

[ArunSaravananBalachandran]

SUMMARY

Fix replaced state handling in l3_interfaces module.

GitHub Issues

List the GitHub issues impacted by this PR. If no Github issues are affected, please indicate this with "N/A".

GitHub Issue #
N/A

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

• sonic_l3_interfaces

OUTPUT

ADDITIONAL INFORMATION

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility or have provided any relevant "breaking_changes" descriptions in a "fragment" file in the "changelogs/fragments" directory of this repository.
• I have provided a summary for this PR in valid "fragment" file format in the "changelogs/fragments" directory of this repository branch. Reference : Ansible Change Log Document

How Has This Been Tested?

Regression report (with updated test cases)

• Without fix: l3_interfaces_regression_report_before_fix.pdf
• With fix: l3_interfaces_regression_report.pdf

[kerry-meyer]

The proposed change set, added test cases and test results look good.

Thank you for noticing and fixing this deficiency in the 'replaced' state handling for the l3_interfaces resource module.

Approved.