Scala Kinesis Enrich - [Fix] network_userid was missing

Fix a bug with network_userid which was missing, and bump scala-common-enrich to 0.3.0
maybe more idiomatic to scala:
```scala
if (co.network_userid == null) {
  ci.userId.foreach(co.network_userid = _)
}
```
Or even replace the if/null
```scala
Option(co.network_userid).foreach(_ => ci.userId.foreach(co.network_userid = _))
```