Improve topology view pod --> service --> pod traffic

[eranra]

Today the view in the topology looks like::

A ---------> B ! !----------> S

So that customers are not aware that there is no direct traffic from A --> B and instead the traffic is actually thru S. We need to make it clear that A -->B is not direct traffic. This can be done by using https://github.com/netobserv/flowlogs-pipeline/issues/214 configuration into L2 and changing the edges in the visualization (for example lighter gray, or dotted ... ).

Note: This might be a temporal solution until we will be able to identify the traffic as starting in the S node and not in A.