examples: break from 'PerRPCCredsCallOption' status checking loop (#3772)
examples: break from 'PerRPCCredsCallOption' status checking loop (#3772)

If *grpc.PerRPCCredsCallOption is not found in the option array then change credentialConfigStatus to true and break from the loop. No need to iterate further.
grpc/grpc-go,stanley-cheung/grpc-go,stanley-cheung/grpc-go,dfawley/grpc-go,menghanl/grpc-go,menghanl/grpc-go,grpc/grpc-go,dfawley/grpc-go