[test] Added test with bonding first connecting socket failure

[ethouris]

Added a test for Bonding, which does the following thing:

1. Sets up a listener on port 5555.
2. Connects the members, in this order: port 5556, 5555, 5555 (the first one trying to connect a nonexitent listener).

This is to test if when the initially created common ISN for the group holds even if the very first connection attempt fails.

This is created as an attempt to prove no failure against the proposal in #2735.