Added zookeeper as sql_last_value storage

[VladislavRusin]

It will cover following cases:

• When we have "Active - Stand by" architecture where 2 logstash instances work on different machines and they need to use same metadata path
• When we need to refill old events by changing last value (In case of file system it's difficult to change values)

[VladislavRusin]

Hi.
Any updates?

[VladislavRusin]

Anybody home?))

[elasticcla]

Hi @VladislavRusin, we have found your signature in our records, but it seems like you have signed with a different e-mail than the one used in yout Git commit. Can you please add both of these e-mails into your Github profile (they can be hidden), so we can match your e-mails to your Github profile?

[elasticcla]

Hi @VladislavRusin, we have found your signature in our records, but it seems like you have signed with a different e-mail than the one used in yout Git commit. Can you please add both of these e-mails into your Github profile (they can be hidden), so we can match your e-mails to your Github profile?