This reverts commit a967b9dd66fad5b055b071794a4b059feed9fe90.
Reason for revert: Check if it's still the case.
Change-Id: Ib5496d6bc2ddfe1fedacc4f9c859ac56fc69726e
Background in [1].
Ubuntu uses pre 15.2.11 client and new 15.2.11 installs default that to false,
therefore not allowing Ubuntu clients to connect.
[1]: https://docs.ceph.com/en/latest/security/CVE-2021-20288/
Change-Id: Ic251b447026262eab4b406b8432cc009ca97ae82
This makes it cleaner, allows reuse and outsourcing to zuul jobs
and enables us to create multiple of these overlay networks for
testing of more advanced scenarios.
Change-Id: Id557c81f68a7f34556854e7d6efc6eddfd2e7216
