consistency params support

[Strafo]

Add Write consistency parameter to support InfluxDB Enterprise.

For the go client library it was a small change: https://github.com/influxdata/influxdb-client-go/pull/348/files#diff-27816c8e9d4abdc1d7aa91a3b3298b2b37afcfd60dc9094d47e2f4d58d05c74a

[msrd0]

Looks like that could be a small change here too. PRs welcome.