add missing accessors for configuration properties' array members

[mbenson]

can't configure properly otherwise

[mbogoevici]

Hi @mbenson,

Thanks for the contribution.

Do you have a CLA signed? https://github.com/spring-projects/spring-framework/blob/master/CONTRIBUTING.md#sign-the-individual-contributor-license-agreement-icla

[mbogoevici]

Trying to reproduce this: passing the values as a comma separated list will work, but not the explicit array mapping.

spring.cloud.stream.kafka.binder.brokers=localhost:29092,localhost:19092 will work

spring.cloud.stream.kafka.binder.brokers[0]=localhost:29092
spring.cloud.stream.kafka.binder.brokers[1]=localhost:19092 will not (and presumably the YML equivalent)

[mbenson]

I have signed the CLA, and have several PRs accepted into spring-boot and spring-cloud already.

[mbogoevici]

Cool, thanks. Just wanted to confirm. LGTM, merging.