Strip whitespace from value for ES servers and kafka brokers

[black-adder]

Requirement - what kind of business use case are you trying to solve?

See #1300 for ES servers and kafka brokers

Problem - what in Jaeger blocks you from solving the requirement?

jaeger/plugin/storage/es/options.go

Line 221 in bfa7b78

cfg.servers = v.GetString(cfg.namespace + suffixServerURLs)

and

jaeger/plugin/storage/kafka/options.go

Line 77 in bfa7b78

Brokers: strings.Split(v.GetString(configPrefix+suffixBrokers), ","),

Proposal - what do you suggest to solve the problem or improve the existing situation?

Same solution as in #1301

Any open questions to address

Perhaps come up with a general solution for this? Maybe x/config/viper.go that wraps viper but with an extra function GetStrings that handles the removal of whitespaces? Overkill?

[jpkrohling]

Perhaps come up with a general solution for this?

You mean, to be applied automatically to all properties, or as a helper function? There might be cases where spaces should be part of the value, but we could apply this to properties where the input is well-defined, like IP addresses/hostnames.

[black-adder]

a helper function so as to not to copy stripWhitespace function everywhere.

[annanay25]

@black-adder was this issue fixed with #1305?

[pavolloffay]

Yeah I think it was, please reopen if it still has to be solved.