Camel defines invalid version of okhttp for pubnub and influxdb

Both pubnub and influxdb have a direct dependency on okhttp3 but do not define it. Instead, they inherit this dependency transitively. When many camel components are used together on a flat classpath it may happen that a version of okhttp is pulled in that is incompatible with the respective camel component.

The first course of action is to actually define the direct dependencies that exist.

I'll try to consolidate/update that version of okhttp to see if it works for all ...