fix: throttleHost is not array in ExternalRateLimit #2232

Job	Run time
Lint	2m 24s
Codegen	4m 12s
Shellcheck	4s
Go build	2m 53s
Chart checks	18s
Mocks	2m 30s
Scan images for security vulnerabilities	5m 1s
Docker Images	0s
Go ingress test e2e (10)	16m 52s
Go gateway test e2e (6, latest, ubuntu-22.04)	21m 13s
Go gateway test e2e (6, v1.19.16-k3s1, ubuntu-20.04)	19m 8s
Go gateway test e2e (6, v1.21.14-k3s1, ubuntu-22.04)	20m 16s
Integration Test with Tresor, SMI traffic policies, and egress disabled	11m 4s
Go test	7m 45s
Go gateway test e2e (6, v1.23.17-k3s1, ubuntu-22.04)	21m 11s
Go mesh test e2e (1, ubuntu-22.04)	34m 7s
Go gateway test e2e (7, latest, ubuntu-22.04)	22m 8s
Go mesh test e2e (2, ubuntu-22.04)	43m 0s
Go gateway test e2e (7, v1.19.16-k3s1, ubuntu-20.04)	19m 35s
Go mesh test e2e (3, ubuntu-22.04)	42m 8s
Go mesh test e2e (4, ubuntu-22.04)	41m 36s
Go mesh test e2e (5, ubuntu-22.04)	40m 10s
Go mesh test e2e (v1.19.16-k3s1, Test traffic flowing from client to server with a Kubernetes Ser...	12m 40s
Go mesh test e2e (v1.27.16-k3s1, Test traffic flowing from client to server with a Kubernetes Ser...	12m 47s
Go statefulset test e2e (8)	14m 17s
Go retry test e2e (9)	15m 18s
	7h 12m 37s

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