e87fefc test: Add rpc_bind test to default-run tests (Wladimir J. van der Laan)
Pull request description:
Skip the parts that cannot be run on the host due to lack of IPv6 support or a second interface to bind on, and warn appropriately.
Without no strong requirements (besides being Linux only, which will skip the test) left, add this test to the default in test_runner.
~~(the non-IPv6 parts of the two dual-IPv4/6 tests could also be enabled, but first going to look what Travis does here to see if there wasn't another reason it was disabled)~~ done, it only makes sense for the first
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Backport of Core PR12510