Allow multiple physical interface support for secondary network bridge #31360

Job	Run time
Verify docs and spelling	1m 7s
Check whether tests need to be run based on diff	18s
Unit test (ubuntu-latest)	6m 18s
Unit test (windows-2022)	9m 58s
Golangci-lint (ubuntu-latest)	7m 54s
Integration test	4m 44s
Build Antrea and antctl binaries	10m 28s
Golangci-lint (macos-latest)	8m 7s
Build Antrea Windows binaries	1m 51s
Check tidy, code generation and manifest	6m 4s
Go benchmark test	4m 41s
	1h 1m 30s

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