Add more logging during process definition importing

[chillleader]

What should we do?

During process definition importing, the Connector runtime doesn't log its progress. We only have logs where latest versions are listed for each process, but the subsequent step of fetching the BPMN XML and analyzing it for inbound connectors can take some time, especially when there are many process definitions in the cluster. This stage is not transparent and the runtime doesn't log its progress while going through the process XML.

Why should we do it?

To make it easier to understand what's happening if the runtime takes more time to load.