Since most iotests are now run during "make check" already, we do not
need to test them explicitly from the gitlab-ci.yml script anymore.
And while we're at it, add some of the new non-auto tests >= 246 instead.

Message-Id: <20190717111947.30356-5-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>