[TestOnly] Test multicast on release-1.14 #158

Job	Run time
Verify docs and spelling	50s
Check whether tests need to be run based on diff	28s
Go benchmark test	7m 22s
Build Antrea and antctl binaries	16m 56s
Golangci-lint (macos-latest)	11m 49s
Golangci-lint (ubuntu-latest)	13m 39s
Integration test	18m 19s
Unit test (ubuntu-latest)	11m 20s
Unit test (windows-2022)	26m 38s
Check tidy, code generation and manifest	8m 55s
Build Antrea Windows binaries	3m 10s
	1h 59m 26s

Provide feedback