Add plural IP fields to EndpointSpec #5208

Job	Run time
No "Apply suggestions from code review" Commits	6s
Check branch dependencies	28s
Submariner K8s API Code Generation	1m 33s
Commit Message(s)	10s
Go	4m 5s
Dependency Licenses	2m 34s
Markdown Links (modified files)	11s
Markdown	11s
Package Documentation	1m 2s
Protobuf Code Generation	38s
Shell	10s
Variant Analysis	4m 3s
Vulnerability Scanning	24s
YAML	10s
	15m 45s

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